Multi-department Permissions in Desk

Multi-department Permissions in Desk

Hi,

I have several techncians belonging to Department A that would need to be granted access permission on Department B. Technicians in Department B do not need permission on Department A.

I have tried setting users on Department A also Department B.
This has the problem that, when a ticket is created on Department B, they are also notified by email.
So are the admins, and we have had to disable the notifications.

I have tried enabling the Multi-department Permissions this does not permit a user to see other department's data.

How should I proceed?

Thanks in advance.