I didn't try AVG for business but we do use AVAST free for business protection.
But must change few options in it.
#1 set password for AVAST therefore other co-workers can't change the options.
#2 Setting - Action tap - change all action to "Delete"
#3 Sensitivity - change all sensitivity to "Heuristics - high" PUP and suspicious files - check
#4 Report file - enable
We are not trust this software 100% but better then nothing and better then default setting.
good luck~