improve copy

Author: icecrasher321

apps/sim/ee/access-control/components/access-control.tsx

@@ -1163,7 +1163,9 @@ export function AccessControl() {
   if (!canManage) {
     return (
       <div className='flex h-full items-center justify-center text-[var(--text-muted)] text-sm'>
-        Only organization admins on Enterprise plans can manage Access Control settings.
+        {!organizationId
+          ? "Access Control applies to organization workspaces. This workspace isn't part of an organization."
+          : 'Only organization admins on Enterprise plans can manage Access Control settings.'}
       </div>
     )
   }