diff --git a/keyserver/src/fetchers/thread-fetchers.js b/keyserver/src/fetchers/thread-fetchers.js
--- a/keyserver/src/fetchers/thread-fetchers.js
+++ b/keyserver/src/fetchers/thread-fetchers.js
@@ -289,6 +289,13 @@
     native: 336,
     web: 79,
   });
+  const addingUsersToCommunityRootSupported = !hasMinCodeVersion(
+    viewer.platformDetails,
+    {
+      native: 999,
+      web: 999,
+    },
+  );
 
   const threadInfos: {
     [string]: LegacyRawThreadInfo | RawThreadInfo,
@@ -305,6 +312,7 @@
         filterVoicedInAnnouncementChannelsPermission: codeVersionBelow283,
         minimallyEncodePermissions: minimallyEncodedPermissionsSupported,
         includeSpecialRoleFieldInRoles: specialRoleFieldSupported,
+        allowAddingUsersToCommunityRoot: addingUsersToCommunityRootSupported,
       },
     );
     if (threadInfo) {
diff --git a/lib/permissions/thread-permissions.js b/lib/permissions/thread-permissions.js
--- a/lib/permissions/thread-permissions.js
+++ b/lib/permissions/thread-permissions.js
@@ -291,7 +291,6 @@
     [threadPermissions.EDIT_THREAD_AVATAR]: true,
     [threadPermissions.CREATE_SUBCHANNELS]: true,
     [threadPermissions.CREATE_SIDEBARS]: true,
-    [threadPermissions.ADD_MEMBERS]: true,
     [threadPermissions.DELETE_THREAD]: true,
     [threadPermissions.REMOVE_MEMBERS]: true,
     [threadPermissions.CHANGE_ROLE]: true,
@@ -321,7 +320,10 @@
 
   let adminPermissions;
   if (threadType === threadTypes.GENESIS) {
-    adminPermissions = baseAdminPermissions;
+    adminPermissions = {
+      ...baseAdminPermissions,
+      [threadPermissions.ADD_MEMBERS]: true,
+    };
   } else {
     adminPermissions = {
       ...baseAdminPermissions,
diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -564,6 +564,7 @@
   +filterVoicedInAnnouncementChannelsPermission?: boolean,
   +minimallyEncodePermissions?: boolean,
   +includeSpecialRoleFieldInRoles?: boolean,
+  +allowAddingUsersToCommunityRoot?: boolean,
 };
 
 function rawThreadInfoFromServerThreadInfo(
@@ -581,31 +582,50 @@
   const shouldMinimallyEncodePermissions = options?.minimallyEncodePermissions;
   const shouldIncludeSpecialRoleFieldInRoles =
     options?.includeSpecialRoleFieldInRoles;
+  const allowAddingUsersToCommunityRoot =
+    options?.allowAddingUsersToCommunityRoot;
 
-  const filterThreadPermissions = _omitBy(
-    (v, k) =>
-      (filterThreadEditAvatarPermission &&
-        [
-          threadPermissions.EDIT_THREAD_AVATAR,
-          threadPermissionPropagationPrefixes.DESCENDANT +
+  const filterThreadPermissions = (
+    innerThreadPermissions: ThreadPermissionsInfo,
+  ) => {
+    if (
+      allowAddingUsersToCommunityRoot &&
+      (serverThreadInfo.type === threadTypes.COMMUNITY_ANNOUNCEMENT_ROOT ||
+        serverThreadInfo.type === threadTypes.COMMUNITY_ROOT)
+    ) {
+      innerThreadPermissions = {
+        ...innerThreadPermissions,
+        [threadPermissions.ADD_MEMBERS]: {
+          value: true,
+          source: serverThreadInfo.id,
+        },
+      };
+    }
+    return _omitBy(
+      (v, k) =>
+        (filterThreadEditAvatarPermission &&
+          [
             threadPermissions.EDIT_THREAD_AVATAR,
-        ].includes(k)) ||
-      (excludePinInfo &&
-        [
-          threadPermissions.MANAGE_PINS,
-          threadPermissionPropagationPrefixes.DESCENDANT +
+            threadPermissionPropagationPrefixes.DESCENDANT +
+              threadPermissions.EDIT_THREAD_AVATAR,
+          ].includes(k)) ||
+        (excludePinInfo &&
+          [
             threadPermissions.MANAGE_PINS,
-        ].includes(k)) ||
-      (filterManageInviteLinksPermission &&
-        [threadPermissions.MANAGE_INVITE_LINKS].includes(k)) ||
-      (filterVoicedInAnnouncementChannelsPermission &&
-        [
-          threadPermissions.VOICED_IN_ANNOUNCEMENT_CHANNELS,
-          threadPermissionPropagationPrefixes.DESCENDANT +
-            threadPermissionFilterPrefixes.TOP_LEVEL +
+            threadPermissionPropagationPrefixes.DESCENDANT +
+              threadPermissions.MANAGE_PINS,
+          ].includes(k)) ||
+        (filterManageInviteLinksPermission &&
+          [threadPermissions.MANAGE_INVITE_LINKS].includes(k)) ||
+        (filterVoicedInAnnouncementChannelsPermission &&
+          [
             threadPermissions.VOICED_IN_ANNOUNCEMENT_CHANNELS,
-        ].includes(k)),
-  );
+            threadPermissionPropagationPrefixes.DESCENDANT +
+              threadPermissionFilterPrefixes.TOP_LEVEL +
+              threadPermissions.VOICED_IN_ANNOUNCEMENT_CHANNELS,
+          ].includes(k)),
+    )(innerThreadPermissions);
+  };
 
   const members = [];
   let currentUser;
diff --git a/lib/types/thread-permission-types.js b/lib/types/thread-permission-types.js
--- a/lib/types/thread-permission-types.js
+++ b/lib/types/thread-permission-types.js
@@ -202,12 +202,11 @@
   description: 'Allows members to add other members to channels',
   userSurfacedPermission: userSurfacedPermissions.ADD_MEMBERS,
 };
-const addMembers = threadPermissions.ADD_MEMBERS;
 const childOpenAddMembers =
   threadPermissionPropagationPrefixes.CHILD +
   threadPermissionFilterPrefixes.OPEN +
   threadPermissions.ADD_MEMBERS;
-const addMembersPermissions = new Set([addMembers, childOpenAddMembers]);
+const addMembersPermissions = new Set([childOpenAddMembers]);
 
 const removeMembersPermission = {
   title: 'Remove members',