Lets for example create a situation:

We'll have lets say "Mark" as a regular MI Member, he wanted to join some law enforcement, passed academy, and bla bla bla. Then when hes out of all those probations and stuff he just becomes a regular officer. And after a month of succesfully becoming an officer in MI, one day Mark decides to play as a civilian, he gets lawfully arrested, but then he leaves the game while the other officer takes him to booking, Mark gets moderated, banned for 2 days, but then suddenly high-command member of the department Mark was working in (lets call him Alex) finds out that he was banned (NOT PERMAMENTLY) for LTAA, and gives him 7-day suspension within the department.

So the question is: Can Alex be moderated for administratively punishing Mark within the department for actions Mark did on civlian team and that could not affect his professionalism & conduct within the department?

I am not a staff member but the only answer to this is. Was Mark using another character?

Let's say he is a person called Angy Alexander in the department.

When he played as civilian and was banned he was playing as someone called James Alexander

In that case they cannot punish you.

And it would be the same for the same character due to it being OOC and would be considered Meta gaming.