diff --git a/backend/src/services/project-membership/project-membership-fns.ts b/backend/src/services/project-membership/project-membership-fns.ts
index 98acd6eec..baa62628c 100644
--- a/backend/src/services/project-membership/project-membership-fns.ts
+++ b/backend/src/services/project-membership/project-membership-fns.ts
@@ -12,6 +12,8 @@ import { TProjectDALFactory } from "../project/project-dal";
 import { assignWorkspaceKeysToMembers } from "../project/project-fns";
 import { TProjectBotDALFactory } from "../project-bot/project-bot-dal";
 import { TProjectKeyDALFactory } from "../project-key/project-key-dal";
+import { TProjectRoleDALFactory } from "../project-role/project-role-dal";
+import { getPredefinedRoles } from "../project-role/project-role-fns";
 import { SmtpTemplates, TSmtpService } from "../smtp/smtp-service";
 import { TProjectMembershipDALFactory } from "./project-membership-dal";
 import { TProjectUserMembershipRoleDALFactory } from "./project-user-membership-role-dal";
@@ -24,6 +26,7 @@ type TAddMembersToProjectArg = {
   projectBotDAL: Pick<TProjectBotDALFactory, "findOne">;
   userGroupMembershipDAL: Pick<TUserGroupMembershipDALFactory, "findUserGroupMembershipsInProject">;
   projectUserMembershipRoleDAL: Pick<TProjectUserMembershipRoleDALFactory, "insertMany">;
+  projectRoleDAL: Pick<TProjectRoleDALFactory, "findOne">;
   smtpService: Pick<TSmtpService, "sendMail">;
 };
 
@@ -31,7 +34,7 @@ type AddMembersToNonE2EEProjectDTO = {
   emails: string[];
   usernames: string[];
   projectId: string;
-  projectMembershipRole: ProjectMembershipRole;
+  projectMembershipRoles: string[];
   sendEmails?: boolean;
 };
 
@@ -48,11 +51,12 @@ export const addMembersToProject = ({
   projectBotDAL,
   userGroupMembershipDAL,
   projectUserMembershipRoleDAL,
+  projectRoleDAL,
   smtpService
 }: TAddMembersToProjectArg) => {
   // Can create multiple memberships for a singular project, based on user email / username
   const addMembersToNonE2EEProject = async (
-    { emails, usernames, projectId, projectMembershipRole, sendEmails }: AddMembersToNonE2EEProjectDTO,
+    { emails, usernames, projectId, projectMembershipRoles, sendEmails }: AddMembersToNonE2EEProjectDTO,
     options: AddMembersToNonE2EEProjectOptions = { throwOnProjectNotFound: true }
   ) => {
     const processTransaction = async (tx: Knex) => {
@@ -119,7 +123,6 @@ export const addMembersToProject = ({
         userPrivateKey: botPrivateKey,
         members: orgMembers.map((membership) => ({
           orgMembershipId: membership.id,
-          projectMembershipRole,
           userPublicKey: membership.user.publicKey
         }))
       });
@@ -136,10 +139,37 @@ export const addMembersToProject = ({
         })),
         tx
       );
-      await projectUserMembershipRoleDAL.insertMany(
-        projectMemberships.map(({ id }) => ({ projectMembershipId: id, role: projectMembershipRole })),
-        tx
-      );
+
+      const defaultRoles = getPredefinedRoles(projectId).map((i) => i.slug) as string[];
+      for await (const projectMembershipRole of projectMembershipRoles) {
+        // Custom role
+        if (!defaultRoles.includes(projectMembershipRole)) {
+          const role = await projectRoleDAL.findOne({
+            projectId,
+            slug: projectMembershipRole
+          });
+
+          if (!role) {
+            throw new BadRequestError({ message: `Custom role "${projectMembershipRole}" not found` });
+          }
+
+          await projectUserMembershipRoleDAL.insertMany(
+            projectMemberships.map(({ id }) => ({
+              projectMembershipId: id,
+              role: ProjectMembershipRole.Custom,
+              customRoleId: role.id
+            })),
+            tx
+          );
+        }
+        // Predefined role
+        else {
+          await projectUserMembershipRoleDAL.insertMany(
+            projectMemberships.map(({ id }) => ({ projectMembershipId: id, role: projectMembershipRole })),
+            tx
+          );
+        }
+      }
 
       members.push(...projectMemberships);
 
diff --git a/backend/src/services/project-membership/project-membership-service.ts b/backend/src/services/project-membership/project-membership-service.ts
index 49a86f31b..e2ed4647d 100644
--- a/backend/src/services/project-membership/project-membership-service.ts
+++ b/backend/src/services/project-membership/project-membership-service.ts
@@ -42,7 +42,7 @@ type TProjectMembershipServiceFactoryDep = {
   projectUserMembershipRoleDAL: Pick<TProjectUserMembershipRoleDALFactory, "insertMany" | "find" | "delete">;
   userDAL: Pick<TUserDALFactory, "findById" | "findOne" | "findUserByProjectMembershipId" | "find">;
   userGroupMembershipDAL: TUserGroupMembershipDALFactory;
-  projectRoleDAL: Pick<TProjectRoleDALFactory, "find">;
+  projectRoleDAL: Pick<TProjectRoleDALFactory, "find" | "findOne">;
   orgDAL: Pick<TOrgDALFactory, "findMembership" | "findOrgMembersByUsername">;
   projectDAL: Pick<TProjectDALFactory, "findById" | "findProjectGhostUser" | "transaction" | "findProjectById">;
   projectKeyDAL: Pick<TProjectKeyDALFactory, "findLatestProjectKey" | "delete" | "insertMany">;
diff --git a/backend/src/services/project-membership/project-membership-types.ts b/backend/src/services/project-membership/project-membership-types.ts
index 21efaf691..c50ee4c1b 100644
--- a/backend/src/services/project-membership/project-membership-types.ts
+++ b/backend/src/services/project-membership/project-membership-types.ts
@@ -53,4 +53,5 @@ export type TAddUsersToWorkspaceNonE2EEDTO = {
   sendEmails?: boolean;
   emails: string[];
   usernames: string[];
+  roleSlugs?: string[];
 } & TProjectPermission;
diff --git a/frontend/src/hooks/api/users/mutation.tsx b/frontend/src/hooks/api/users/mutation.tsx
index eb9bb8007..9ee16415d 100644
--- a/frontend/src/hooks/api/users/mutation.tsx
+++ b/frontend/src/hooks/api/users/mutation.tsx
@@ -51,9 +51,10 @@ export const useAddUserToWsNonE2EE = () => {
   const queryClient = useQueryClient();
 
   return useMutation<{}, {}, AddUserToWsDTONonE2EE>({
-    mutationFn: async ({ projectId, usernames }) => {
+    mutationFn: async ({ projectId, usernames, roleSlugs }) => {
       const { data } = await apiRequest.post(`/api/v2/workspace/${projectId}/memberships`, {
-        usernames
+        usernames,
+        roleSlugs
       });
       return data;
     },
diff --git a/frontend/src/hooks/api/users/types.ts b/frontend/src/hooks/api/users/types.ts
index 6c538811b..048dd3d63 100644
--- a/frontend/src/hooks/api/users/types.ts
+++ b/frontend/src/hooks/api/users/types.ts
@@ -133,6 +133,7 @@ export type AddUserToWsDTOE2EE = {
 export type AddUserToWsDTONonE2EE = {
   projectId: string;
   usernames: string[];
+  roleSlugs?: string[];
   orgId: string;
 };
 
diff --git a/frontend/src/views/Project/MembersPage/components/MembersTab/components/AddMemberModal.tsx b/frontend/src/views/Project/MembersPage/components/MembersTab/components/AddMemberModal.tsx
index 6db92861e..fbf174756 100644
--- a/frontend/src/views/Project/MembersPage/components/MembersTab/components/AddMemberModal.tsx
+++ b/frontend/src/views/Project/MembersPage/components/MembersTab/components/AddMemberModal.tsx
@@ -2,24 +2,38 @@ import { useMemo } from "react";
 import { Controller, useForm } from "react-hook-form";
 import { useTranslation } from "react-i18next";
 import Link from "next/link";
+import { faCheckCircle, faChevronDown } from "@fortawesome/free-solid-svg-icons";
+import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
 import { zodResolver } from "@hookform/resolvers/zod";
+import { twMerge } from "tailwind-merge";
 import { z } from "zod";
 
 import { createNotification } from "@app/components/notifications";
-import { Button, FormControl, Modal, ModalContent, Select, SelectItem } from "@app/components/v2";
+import {
+  Button,
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+  FormControl,
+  Modal,
+  ModalContent
+} from "@app/components/v2";
 import { useOrganization, useWorkspace } from "@app/context";
 import {
-  useAddUserToWsE2EE,
   useAddUserToWsNonE2EE,
   useGetOrgUsers,
+  useGetProjectRoles,
   useGetUserWsKey,
   useGetWorkspaceUsers
 } from "@app/hooks/api";
+import { ProjectMembershipRole } from "@app/hooks/api/roles/types";
 import { ProjectVersion } from "@app/hooks/api/workspace/types";
 import { UsePopUpState } from "@app/hooks/usePopUp";
 
 const addMemberFormSchema = z.object({
-  orgMembershipId: z.string().trim()
+  orgMembershipIds: z.array(z.string().trim()).min(1),
+  projectRoleSlugs: z.array(z.string().trim().min(1)).min(1)
 });
 
 type TAddMemberForm = z.infer<typeof addMemberFormSchema>;
@@ -41,17 +55,22 @@ export const AddMemberModal = ({ popUp, handlePopUpToggle }: Props) => {
   const { data: members } = useGetWorkspaceUsers(workspaceId);
   const { data: orgUsers } = useGetOrgUsers(orgId);
 
-  const { mutateAsync: addUserToWorkspace } = useAddUserToWsE2EE();
   const { mutateAsync: addUserToWorkspaceNonE2EE } = useAddUserToWsNonE2EE();
 
+  const { data: roles } = useGetProjectRoles(currentWorkspace?.slug || "");
+
   const {
     control,
     handleSubmit,
     reset,
+    watch,
     formState: { isSubmitting }
-  } = useForm<TAddMemberForm>({ resolver: zodResolver(addMemberFormSchema) });
+  } = useForm<TAddMemberForm>({
+    resolver: zodResolver(addMemberFormSchema),
+    defaultValues: { orgMembershipIds: [], projectRoleSlugs: [ProjectMembershipRole.Member] }
+  });
 
-  const onAddMember = async ({ orgMembershipId }: TAddMemberForm) => {
+  const onAddMember = async ({ orgMembershipIds, projectRoleSlugs }: TAddMemberForm) => {
     if (!currentWorkspace) return;
     if (!currentOrg?.id) return;
     // TODO(akhilmhdh): Move to memory storage
@@ -62,22 +81,23 @@ export const AddMemberModal = ({ popUp, handlePopUpToggle }: Props) => {
       });
       return;
     }
-    const orgUser = (orgUsers || []).find(({ id }) => id === orgMembershipId);
-    if (!orgUser) return;
+    const selectedMembers = orgMembershipIds.map((orgMembershipId) =>
+      orgUsers?.find((orgUser) => orgUser.id === orgMembershipId)
+    );
+
+    if (!selectedMembers) return;
 
     try {
-      // TODO: update
       if (currentWorkspace.version === ProjectVersion.V1) {
-        await addUserToWorkspace({
-          workspaceId,
-          userPrivateKey,
-          decryptKey: wsKey,
-          members: [{ orgMembershipId, userPublicKey: orgUser.user.publicKey }]
+        createNotification({
+          type: "error",
+          text: "Please upgrade your project to invite new members to the project."
         });
       } else {
         await addUserToWorkspaceNonE2EE({
           projectId: workspaceId,
-          usernames: [orgUser.user.username],
+          usernames: [...selectedMembers.map((member) => member?.user.username!)],
+          roleSlugs: projectRoleSlugs,
           orgId
         });
       }
@@ -104,6 +124,11 @@ export const AddMemberModal = ({ popUp, handlePopUpToggle }: Props) => {
     return (orgUsers || []).filter(({ user: u }) => !wsUserUsernames.has(u.username));
   }, [orgUsers, members]);
 
+  const selectedOrgMembershipIds = watch("orgMembershipIds");
+  const selectedRoleSlugs = watch("projectRoleSlugs");
+
+  console.log(selectedOrgMembershipIds);
+
   return (
     <Modal
       isOpen={popUp?.addMember?.isOpen}
@@ -115,35 +140,181 @@ export const AddMemberModal = ({ popUp, handlePopUpToggle }: Props) => {
       >
         {filteredOrgUsers.length ? (
           <form onSubmit={handleSubmit(onAddMember)}>
-            <Controller
-              control={control}
-              defaultValue={filteredOrgUsers?.[0]?.user?.username}
-              name="orgMembershipId"
-              render={({ field, fieldState: { error } }) => (
-                <FormControl label="Username" isError={Boolean(error)} errorText={error?.message}>
-                  <Select
-                    position="popper"
-                    className="w-full"
-                    defaultValue={filteredOrgUsers?.[0]?.user?.username}
-                    value={field.value}
-                    onValueChange={field.onChange}
-                  >
-                    {filteredOrgUsers.map(({ id: orgUserId, user: u }) => (
-                      <SelectItem value={orgUserId} key={`org-membership-join-${orgUserId}`}>
-                        {u?.username}
-                      </SelectItem>
-                    ))}
-                  </Select>
-                </FormControl>
-              )}
-            />
+            <div className="flex w-full items-center gap-2">
+              <div className="w-full">
+                <Controller
+                  control={control}
+                  name="orgMembershipIds"
+                  render={({ field }) => (
+                    <FormControl label="Invite users to project">
+                      <DropdownMenu>
+                        <DropdownMenuTrigger asChild>
+                          {filteredOrgUsers && filteredOrgUsers.length > 0 ? (
+                            <div className="inline-flex w-full cursor-pointer items-center justify-between rounded-md border border-mineshaft-600 bg-mineshaft-900 px-3 py-2 font-inter text-sm font-normal text-bunker-200 outline-none data-[placeholder]:text-mineshaft-200">
+                              {/* eslint-disable-next-line no-nested-ternary */}
+                              {selectedOrgMembershipIds.length === 1
+                                ? filteredOrgUsers.find(
+                                    (orgUser) => orgUser.id === selectedOrgMembershipIds[0]
+                                  )?.user.username
+                                : selectedOrgMembershipIds.length === 0
+                                ? "No users selected"
+                                : `${selectedOrgMembershipIds.length} users selected`}
+                              <FontAwesomeIcon icon={faChevronDown} className="text-xs" />
+                            </div>
+                          ) : (
+                            <div className="inline-flex w-full cursor-default items-center justify-between rounded-md border border-mineshaft-600 bg-mineshaft-900 px-3 py-2 font-inter text-sm font-normal text-bunker-200 outline-none data-[placeholder]:text-mineshaft-200">
+                              No users found
+                            </div>
+                          )}
+                        </DropdownMenuTrigger>
+                        <DropdownMenuContent
+                          align="start"
+                          className="thin-scrollbar z-[100] max-h-80"
+                        >
+                          {filteredOrgUsers && filteredOrgUsers.length > 0 ? (
+                            filteredOrgUsers.map((member) => {
+                              const isSelected = selectedOrgMembershipIds.includes(member.id);
+
+                              return (
+                                <DropdownMenuItem
+                                  onSelect={(event) =>
+                                    filteredOrgUsers.length > 1 && event.preventDefault()
+                                  }
+                                  onClick={() => {
+                                    if (selectedOrgMembershipIds.includes(String(member.id))) {
+                                      field.onChange(
+                                        selectedOrgMembershipIds.filter(
+                                          (membershipId: string) =>
+                                            membershipId !== String(member.id)
+                                        )
+                                      );
+                                    } else {
+                                      field.onChange([
+                                        ...selectedOrgMembershipIds,
+                                        String(member.id)
+                                      ]);
+                                    }
+                                  }}
+                                  key={`membership-id-${member.id}`}
+                                  icon={
+                                    isSelected ? (
+                                      <FontAwesomeIcon
+                                        icon={faCheckCircle}
+                                        className="pr-0.5 text-primary"
+                                      />
+                                    ) : (
+                                      <div className="pl-[1.01rem]" />
+                                    )
+                                  }
+                                  iconPos="left"
+                                  className="w-[28.4rem] text-sm"
+                                >
+                                  {member.user.username}
+                                </DropdownMenuItem>
+                              );
+                            })
+                          ) : (
+                            <div />
+                          )}
+                        </DropdownMenuContent>
+                      </DropdownMenu>
+                    </FormControl>
+                  )}
+                />
+              </div>
+
+              <div className="flex min-w-fit justify-end">
+                <Controller
+                  control={control}
+                  name="projectRoleSlugs"
+                  render={({ field }) => (
+                    <FormControl
+                      label="Select roles"
+                      tooltipText="Select the roles that you wish to assign to the users"
+                    >
+                      <DropdownMenu>
+                        <DropdownMenuTrigger asChild>
+                          {roles && roles.length > 0 ? (
+                            <div className="inline-flex w-full cursor-pointer items-center justify-between rounded-md border border-mineshaft-600 bg-mineshaft-900 px-3 py-2 font-inter text-sm font-normal text-bunker-200 outline-none data-[placeholder]:text-mineshaft-200">
+                              {/* eslint-disable-next-line no-nested-ternary */}
+                              {selectedRoleSlugs.length === 1
+                                ? roles.find((role) => role.slug === selectedRoleSlugs[0])?.name
+                                : selectedRoleSlugs.length === 0
+                                ? "Select at least one role"
+                                : `${selectedRoleSlugs.length} roles selected`}
+                              <FontAwesomeIcon
+                                icon={faChevronDown}
+                                className={twMerge("ml-2 text-xs")}
+                              />
+                            </div>
+                          ) : (
+                            <div className="inline-flex w-full cursor-default items-center justify-between rounded-md border border-mineshaft-600 bg-mineshaft-900 px-3 py-2 font-inter text-sm font-normal text-bunker-200 outline-none data-[placeholder]:text-mineshaft-200">
+                              No roles found
+                            </div>
+                          )}
+                        </DropdownMenuTrigger>
+                        <DropdownMenuContent
+                          align="start"
+                          className="thin-scrollbar z-[100] max-h-80"
+                        >
+                          {roles && roles.length > 0 ? (
+                            roles.map((role) => {
+                              const isSelected = selectedRoleSlugs.includes(role.slug);
+
+                              return (
+                                <DropdownMenuItem
+                                  onSelect={(event) => roles.length > 1 && event.preventDefault()}
+                                  onClick={() => {
+                                    if (selectedRoleSlugs.includes(String(role.slug))) {
+                                      field.onChange(
+                                        selectedRoleSlugs.filter(
+                                          (roleSlug: string) => roleSlug !== String(role.slug)
+                                        )
+                                      );
+                                    } else {
+                                      field.onChange([...selectedRoleSlugs, role.slug]);
+                                    }
+                                  }}
+                                  key={`role-slug-${role.slug}`}
+                                  icon={
+                                    isSelected ? (
+                                      <FontAwesomeIcon
+                                        icon={faCheckCircle}
+                                        className="pr-0.5 text-primary"
+                                      />
+                                    ) : (
+                                      <div className="pl-[1.01rem]" />
+                                    )
+                                  }
+                                  iconPos="left"
+                                  className="w-[28.4rem] text-sm"
+                                >
+                                  {role.name}
+                                </DropdownMenuItem>
+                              );
+                            })
+                          ) : (
+                            <div />
+                          )}
+                        </DropdownMenuContent>
+                      </DropdownMenu>
+                    </FormControl>
+                  )}
+                />
+              </div>
+            </div>
+
             <div className="mt-8 flex items-center">
               <Button
                 className="mr-4"
                 size="sm"
                 type="submit"
                 isLoading={isSubmitting}
-                isDisabled={isSubmitting}
+                isDisabled={
+                  isSubmitting ||
+                  selectedOrgMembershipIds.length === 0 ||
+                  selectedRoleSlugs.length === 0
+                }
               >
                 Add Member
               </Button>