You can edit a room’s name at two different times:
You can also edit the walls heigth. Select a room and open the Info Panel.
Once your plan is uploaded, you need to scale it. All you need to do is click on the image to draw a line from beginning to end, and then indicate the desired length of the line in the corresponfing field.
Note: You can always choose to hide the plan by clicking on the “Eye” icon next to the file name. Also, to delete the plan, click on the bin next to its name.