Its okay to use your big boy voice to get them quiet my music teacher mrs herrick my friend of mine who i was in school with used her big girl voice to get everyone quiet and let me tell you i will get use to it :) or do clapping loudly a rhythm might help or everyone will do the five with you just hold the hand up and watch for everyone to do it with you ! Nobody likes to get yelled at and its a big crowed out there !