How Closing days work
There are several ways to edit when your Catering resources is available.
One of those is Closing days. Perhaps the kitchen is closed during the holidays and you want to ensure no one tries to order while the kitchen is closed. So you add December 24th and December 25th as Closing days. Then no one can order catering for those two days.
Requirements
You need to have the Planner right catering manager to set closing days in Planner.
How to set up closing days in your Planner
Go to Administration -> Resources
Click "Closing days"
Click the calendar in the upper right corner
Click the dates you want to add. I'm using December 24th and December 25th as examples.
The Closing days have been added. No new bookings can be made for the chosen dates.