*How are rooms created? Can you build anything within a room or do you build specific rooms?
You mark an area
Your Workers will dig that area out...
I will quote Fireeye from this Steam post here: http://steamcommunity.com/app/230190/discussions/0/594820473984365164/#c594820656454135038
I would imagin the copy and paste feature like, mark an ?x? area, wait for 2 seconds or so, then a box pops up, you can click like, copie or paste.
Separate names with a comma.