[indubitably]

Right off the bat, just the fact that you are asking all of these questions tells me that you will do just fine at your first competition as a coach, taking the role seriously will result in quick adaption and success.

Regardless, teams have many different uses for coach but generally the coach is the most strategic mind on the drive team. This year the coach may be more important than ever as it would seem that this years game is among the deepest in terms of in-game strategy. The way that you choose to communicate and decide upon strategy is ultimately up to you but most teams will have a preset strategy going into a match.

Before every match, it is common to discuss strategy with your alliance partners. You may have to go find them, but they may also come to you. Be confident in your knowledge of the game rules and don't be afraid to speak your opinion on what strategy you think will be the most effective and why. Even teams that may seem to be set in their ways with what they want to happen in a match admire confidence and competency in a drive team.

As far as in game coaching goes, you will just have to figure out the most effective way to communicate with your drive team members and this year, other coaches as well. Some things to keep track of may be time remaining, status of you alliance members, and effectiveness of current strategy.

In eliminations, the alliance captain will have the biggest say in what strategy will be implemented but it is still a very collaborative effort.

Don't try to burn yourself out and do everything at once, just make sure what you are doing is effective and you will be fine, good luck!