Override sessions limit for staff

[WhiteKnight]

I wonder if it is possible to override the simultaneous sessions limit for admins, moderators and super moderators.

Identified by cookies or session ID as certain usergroups, staff people should be able to do their work without being interrupted by the "too busy error". Instead, there should be no error messages like this for staff at all.

For example, a moderator is editing a post, sending it to the server, but gets rejected because of too many simultaneous sessions. Worst case scenario: the editing is lost.
With this override function enabled, the moderator could finish his job, while a normal user would be rejected with the busy message.

I am interested in other opinions on this and would be happy if someone had a solution. As I'm not too familiar with php coding, I would appreciate detailed explanations on this.

Thanks in advance.