Doors will open and close however the GM chooses. For instance if you have a double door, you can open one, say, 30% and the other fully open… This works in real time and in multiplayer. The GM has total control over how much a door could open.  We plan to have secrets doors to do the same. In the very near future we will link rules with architectural pieces in order to automatize traps, doors and secret doors to work together.