In my experience, the most important thing for the drive coach is to focus on the match macro. it’s one less thing for your driver and operator to worry about and leaves them free to execute their tasks in the game.
For example in 2019, the match strategy might be for your team to fill the cargo ship with balls. Your driver and operator need to focus on getting the ball closest to them, getting it in the robot and making it towards the cargo ship.
Your job is to take note of what your partners are doing and what your opponents are doing. If your partners have already filled the left side of the cargo ship and there’s only the far slot open on the right side, you need to tell your drivers that’s the slot they need to score in. If you see that an area on the field is being heavily defended, tell your driver to score in the undefended spot.
If your partner falls during a climb, and you need the points to win, make the call to your drivers to drop the last game piece and come climb instead.
In my opinion, one of the worst things you can do is micromanage your drive team’s actions (e.g which game piece to go get); they know how to work the robot, but they need you to help them do the correct things to win the match.
In short keep track of these things:
Where game pieces have been scored
What’s happening with defense (as needed)
What actions your team can take to help the alliance win
All of these are the big picture (macro) parts of a match that your drivers don’t need to focus on.