Option to garrison only a single building

[rekterakathom]

Is your enhancement related to a problem?
No

It would be great to have the option for units to garrison a single building instead of spreading out over the garrison module area. This could be used to simulate a more realistic occupation of a town for example. Squads do not spread out into every single house in a town, 1 guy per house.

Solution you'd like:
A checkbox for the garrison module that makes the group occupy a single building in the area instead of spreading out over the area.

Alternatives you've considered:

A similar idea would be to make sure that units don't garrison alone. This would be a great improvement as well that wouldn't require any UI changes. This increases the combat effectiveness of the garrisoned units a lot and is also far more realistic, since (trained) units never go alone in real life!

Additional context: