1. In the floor plan, click the target room and find the Room Name in the right panel.
2. Select a room type in the drop-down menu.
3. Also, you can customize your own Room Name by choosing the option Customize in first dropbox bar tool and change the name to desired one in second column, only maxiumum 60 alphanumeric characters are acceptable.
4. To change room size or measurement, click on the digit number as shown below: