You can assign a room with manual selection on the Reservation Edit popup or with the help of the “Tetris” option – click on the reservation, hold the click and transfer the reservation to the room/apartment that suits you.
Option1 - Tetris change
Note: When changing the room by dragging it in the calendar, if you are changing the room type, the system will offer you the option to "Update the price" if you wish. If you check the price update box, the system will set the default price for that room type in that reservation.
Option2 - Manual Selection from Reservation Edit Screen
You need to enter the reservation and click on the Rooms&Extras tab and then click on the pencil icon next to the room you want to change.
When the window for editing the room opens, from the drop-down menu in the "Room" field, select the desired room number to which you want to move the reservation.
When you have chosen the new room number, click the "Confirm" button.