In some circumstances you may need to merge independent rooms, connected each other through a shared wall.
You can merge those rooms clicking the right mouse button over the shared wall, and selecting the command Merge rooms.
In the next images you can see some examples of rooms that can be merged together in a new, single room. In them you can find a marker that help you better understanding the position where you need to click the right mouse button.
Indeed, there are situations where still you cannot merge rooms with a single command: here are some images related to those situations. In case you need to merge these rooms, we suggest you to split the shared walls, first, in order to get the the situation you saw at the beginning of the article, then apply the command Merge rooms.
This article is valid up to version 2018