My understanding is during a stoppage for an injury a coach (the team not with the injured player) is not allowed to call his players over to the bench area (technical area) and provide coaching instruction. Likewise, the coach of the injured player who comes on the field with permission cannot gather his field players and provide coaching /tactical advise. I cannot find this in the Laws, Guide to Referees, and Advise to Referees.
Can you direct me where in the USSF I can find this? Also, what is the ruling and where is it for NISOA and NFHS?
USSF answer (May 3, 2010):
We cannot provide official answers for NISOA or NFHS games. However, we can provide official answers regarding the Laws of the Game.
There is no rule against either coach or other team official calling his or her players over to the touch line to discuss tactics during a stoppage for injury. However, if a coach or other team official is permitted on the field to see to the status of a seriously injured player — the only reason for stopping play for an injury is if the referee believes it to be serious — he or she may not share any information with any players of that team who are on the field. That would be regarded as irresponsible behavior, forcing the referee to expel the coach.
However, the intelligent referee will preempt the coach from coaching by stopping him early and letting him know that coaching on the field is not permitted. If the coach persists, then the referee should take more drastic action.