How to make a room unavailable on my Calendar?

To open your Calendar, click on login at the top right of the website and then on " Bird Office Calendar ".

All your rooms will display. Click on the day, or drag your mouse over the relevant days and select the rooms you want to make unavailable.
Fill in the schedule: if your event concerns the day as a whole, click on "All day".

Do not forget to give a title, it is the one that will appear on your Calendar (you alone will be able to see this title).