Some of the rooms are label incorrectly, how do I change the room names?

You can rename rooms or move the text box around to make it easier to work with. Click on label box. A room property box will open.

In the Room property box that opened to the right, type in the room name in the first box and the room dimensions in the second. Change the font size by clicking on the icon with the 3 dots to the right of the room name box.