support system Staff rappresentative users

Hi there, I'm using your "Support System" plugin.

I have a problem 2 problems.

First one
I would like to create some users, one for each administrative task, for example the "commercial" user to manage "commercial issue".... etc...

In order to include the "commercial" user into the "Staff Representative" I have to setup the commercial user like "super admin".

That's not so good for me... because other users don't know how to manage the network.
Does anyone knows how to include normal user into the "Staff rappresentative" list?

Second problem: is it possible to link category (maybe in the future) to a specific user without manually change the "Staff rappresentative" field?

Thank you very much for your support