The first statement is in the rules, chances are you didn't see it but here it is.
- Friendly fire such as cell wars is permitted but can only be used every 3 days.
The rule where there needs to be no more than 4 guards to play cell wars is incorrect. As far as I'm aware, there are communities out there that use this rule, so people from those communities come to our servers thinking the rules are the same, which has caused confusion.