FED Rule 4 Starting and Ending Game - Section 1 - Article 2 If there are unusual conditions, such as spectators or obstacles too near the playing field, the home coach shall propose special ground rules. If sanctioned by the visiting team, these shall be in force. If the teams cannot agree, the umpires shall formulate ground rules. Ground rules do not supersede a rules book rule. All special rules shall be announced. Recently in our meetings, some mentioned this, but I don't understand it. I've been trying to picture or come up with scenarios, but nothing comes to mind. Could you share some ground rules that coaches try to put in place that supersede ground rules? .