Click into Settings > Hours of Availability.
Setting your venue's available hours
The hours of availability are your venue's opening times. If bookable spaces have different opening times, you can set different hours of availability. You can do this by selecting "Add more hours" and selecting the relevant spaces, hours and days of the week. Times outside of these hours will be displayed in a darker shade of gray on your scheduler. Regular users will not be able to book outside of these times. Admins can however create bookings outside of the hours of availability if required.
Customizing the hours displayed on the scheduler day mode
You likely have times of the day at which bookings will never occur (e.g. very early in the morning or late at night). You can remove these superfluous hours from the scheduler day mode by specifying just the time range you want to show. Optimizing the display of the day mode in this way means that you and your users won't have to scroll past irrelevant hours...particularly helpful for mobile devices!
One-time changes to space availability (e.g. public holidays, maintenance windows)
Admins can create unavailable type bookings from the booking window to block out calendar dates and times. This might be for public holidays, one-off closures or maintenance times. Use the repeat / recurring feature to block out several days in a row or a pattern of calendar days. For example, create a full-day, all-space, yearly-repeating booking of the unavailable type on January 1 to make New Year's Day unavailable each year. See the article 'Creating Bookings as an Admin' for more information on the three booking types.