Spot idle dwellers

When looking at the list of dwellers, you can see idle dwellers by sorting with the "Status" header. The dwellers on Coffee Break (idle), or in the residence, will have a blank status and show up at the top of the list. This should be language agnostic.

Without using the list, you can spot them more easily by zooming out (to the point where you get 2D graphics and no working animations). They will likely be the only ones moving at all.

Otherwise, remember that the dweller list can be sorted by tapping the "Job" column header. This way, everyone is grouped by their jobs, and it's easy to find the "Coffee Break" people.