beginning term of service

timeout

When beginning the term of service, should the referee:
1. extend arm, blow whistle, then arm motion.
2. extend arm, then simultaneously blows whistle and arm motion.

thanks

FMadera

timeout wrote
When beginning the term of service, should the referee:
1. extend arm, blow whistle, then arm motion.
2. extend arm, then simultaneously blows whistle and arm motion.

thanks

What does the rule book say?