You're getting great advice. I wish I could add more.With the HP matches, when can you be near your rifle (I realize you can do everything but load until given that command), handling the rifle (dryfiring) and generally prepping for the next CoF? I want to avoid being yelled at if possible. Sorry, I know this is pretty elementary.
Clubs may have circumstances that require special rules. One club I shoot at allows you to carry your rifle to the line before the prep period but you can not handle it or adjust it until the prep time begins. If at a new range it's best to ask about any unique procedures.
But kraig is right. Highpower shooters are a great bunch. Ask and ye shall receive. I once helped an opposing team member fix a gun and ended up getting beat by that same team.