Users unable to see buttons on form

Hi All,

We have recently migrated to Domino 8.5.1 server and client notes R 8.5.1. from Domino 6.5 the application is running fine, but recently we added some new users to a group in the Domino Directory. The new users are not able to view a set of buttons (Approve/Reject) which the users who are already added before can see these buttons.

Is there something missing form our side or is this a known issue?

Need some guidance as early as possible.

Thanks.

Regards,

Atul.