Where are band members' absences shown?

Band member absences are shown in the following places:

In the absence overview - logical ;) :

In all date selections, as a text abbreviation that can be set for each band member (by default, it is the first letter of their nickname):

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In the date selection for an event group:

In the monthly overview:

In the individual event view:

In the tabular event availability view:

As can be seen above, the absence is independent of the individual event availability.

This means that nothing is automatically blocked here, the absence is only an indication at these points.