It could be outside working hours, like when you do a retreat on thursday to friday or similar, where you travel a bit farther to get away, and say over night.
Second point:
Hmm, I'd say mandatory in a way that it should only happen when every team-member can attend. I don't see much value in having only a subset of the team doing the TB.
I'm assuming a team of 5-10 people. Of course there are other versions of TB, like a big event for lots of teams or whole companies for example. I hosted such an event once, we did Duct-Tape-Tower-Contests, and the older teams (as in longest time since forming) performed best.
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It could be outside working hours, like when you do a retreat on thursday to friday or similar, where you travel a bit farther to get away, and say over night.
Second point:
Hmm, I'd say mandatory in a way that it should only happen when every team-member can attend. I don't see much value in having only a subset of the team doing the TB.
I'm assuming a team of 5-10 people. Of course there are other versions of TB, like a big event for lots of teams or whole companies for example. I hosted such an event once, we did Duct-Tape-Tower-Contests, and the older teams (as in longest time since forming) performed best.