It's a "game administration" issue and different states / conferences have different rules for this and different views on who should enforce it.
Some might let the cheerleaders stand anywhere.
Some might restrict them to the stands (except during TOs, etc).
Some might say more than 3' from the endline and not in the lane extended and no cheering during free throws and pom-poms must be no more than 28" in diameter and mande of a nocsae approved pliable material designed so the "whooshing" noise cannot be heard more than 14.7 metres away.
IOW, all the answers above could be correct.
|