Boxtrapper for users

One of my clients wants to start using boxtrapper on his new host. I have given him (as the admin for his domain) the address https://www.myclient.foo:2083 for his WHM Control Panel, wherein he has created mailboxes for his employees. He has enabled boxtrapper for them, and is able to go into each mailbox to review queue and delete or whitelist the messages for any user.

However, he wants the individual employee to be able to log in to their own boxtrapper review queue but no one else's. Is this possible?

Thanks!

Tom