there is a checkgroup, recall group and group move npc commands in the server files but i don't know how there used. Saying that when i looked through the diamond sever files they had the same commands but show how they were used i'm kinda hoping the mir 3 commands are set out the same if they ain't they there knackered.
Example from diamond files below: (if mir3's is not teh smae don't blame me)
checkgroupcount usage: CHECKGROUPCOUNT = 5
what it does: checks if there's exactly 5 ppl in group ,options are = , < , >