Gregor,
Having admins with different privileges is not possible at this time. All admins have equal access to the club.
As far as handling the situation I suggest that giving admin rights to only people who are trustworthy and reliable. If you want certain folks to only work on specific matches make sure they understand that.
If you cannot trust people to keep their hands out of other areas of the system or go into matches they shouldn’t then do not make them admins. 