If you have the PMS on with the copy auto selected, you can follow these steps
IMPORTANT! If you have the PMS on, enter ONLY EVER the reservation from the PMS.
Click on the first day of the relevant period, drag the mouse to the right up to the last day and then click again with the mouse as in the picture:
Picture - Click to enlarge
A window will open where to enter all the reservation details.
Easy, isn’t it? 😊