Hi Ankit,

Please write the script on Module table ('sys_app_module') as below. Also you may add the Condition as !gs.hasRole('admin') for better performance.

Script:

//To hide the particular   Module.

      if(!gs.getUser().isMemberOf('Group A'))

              {

              current.addQuery('sys_id','!=','85591e0f4fdde6006292a90f0310c730');//sys_id of the module

      }

I hope this helps.Please mark correct/helpful based on impact