Okay. Still a lil wet behind the ears here, but need help understanding the duties of the R and U1 (and U2 as applicable). Plus, I think this would be a great review for the veterans out there!
In my limited knowledge, I understand that...
R - Court safety, Clocks, Jumpball, Intermission throw-in, scorebook, ruling disagreements, etc. Home team? (2man)
U1/U2 - Players' Uniforms/Apparel, Non-Jumpers (jumpball), Away?(U1) or Home(U1)&Away(U2)
What else should be mentioned. And if someone could point me to the right sections or the Officials' Manual or something, that would be helpful.