You can delete any of the time ranges that comprise your office hours.
To delete a location's hours
How to get there
If you are not already viewing the correct location, select it on the Location menu.
On the Settings menu, under Location, click (or tap) Location Hours.
The Location Hours page opens and displays an overview of the weekly schedule.
On a location's Location Hours page, click (or tap) Edit Hours.
The available time ranges appear in a list.
Select a time range.
The options for editing the time range become available.
Click (or tap) Delete.
A confirmation message appears.
Click (or tap) OK.