Breakout rooms - single or multiple canvases
When I separate the participants into small groups, often, I will use a single room with a separate canvas for each group. This makes it easier to have a post-exercise debrief, going from one area to the next, comparing the results.
I do this more in "learning" workshops, where there is less need to keep the result. In "production" workshops, I would separate the sub-teams into their own room.
How about you?