Via the menu item Settings -> Rooms you can manage your rooms. Rooms can be created per location.
In the overview all existing rooms are listed.
Click on Create room to open the mask for creating a new room.
The term max. persons indicates the maximum number of persons that can be accommodated in the room. For a single room the value is 1, for a double room 2, for a double room with extra bed the value is e.g. 3, etc.
The description will be included in the invoice.
If you click on the symbol you get the detail view.
When you click on the symbol in the overview under Actions you get the form for editing. Here you can edit all fields the same way as when you add an item.
If you click on the symbol under Actions in the overview, the selected element can be deleted.