1. Change the size of a room
Choose the room you need to update then click the pencil icon on its right.
You can then amend the room's size using the height and the width that are on the top of the plan.
To undo your action or recover it, use the arrows on the right.
Don't forget to save by clicking Register.
2. Remove a room
To remove a room, you just need to click the bin icon by the right of the room in the Dining halls section.