45 min
Pick a real project and work it for a whole session
Help each athlete pick a real project, one tag above what they climb comfortably, or the hard end of their current tag. Too easy and there is nothing to work; too hard and they spend the session on the first move.
One to three climbs for the whole session, no more. For each one, in order:
Push them to work together on different betas, and to climb the easy sections efficiently so there is something left for the hard one.
They keep switching climbs. Commit them out loud to one, and hold them to it for twenty minutes.
They picked something far too hard. Move them down a tag rather than letting a whole session end in nothing.