How do you add room/s to an existing reservation?

If you need to add more rooms to an existing reservation go to Reservations > Manage Reservations and then locate the booking by using the search box and/or the date filters at the top of the page:

Click on the + to the left of the reservation number:

This will bring up an option to add a room:

Click on this to add a new room, or click on the drop-down next to it to add multiple rooms in one go. Fill in the required details for the additional room reservation(s) and then press Save.