Enter a coffee shop, but work with smaller groups duos, trios, quartets.

Disperse around the coffee shop, but so that you’re in the same space (for example if the place have 2 floors, stay in the same floor)

Take the place “in”. No talk, no phones, no extra behavior

Drink always at the same time as your smaller group.
Try to arrange canons within the whole groups.
(So when the one groups takes a sip, next group starts and then next)

When you have finished, leave.