Between quarters

[hawk65]

Partner asked me about this last night -- it happened in one of his previous games.

Teams are in front of their benches during the break between 1st and 2nd quarters. Coach A has one of his players take a ball onto the court and shoot 3-4 warm-up jump shots. Coach B wants a technical foul called. Can't find anything in the Fed book about prescribed or prohibited activities during the time-out between quarters. What do you do? Does it make any difference if the player had been injured (i.e., sprained a finger, wrist, ankle) just before the end of the quarter and coach needed to know if he could continue?