How to prevent users from making appointments in time zones other than the business's time zone:

If you have a client whose business is near a time zone border (or maybe the business is in a popular tourist town that receives customers from other time zones) you may want to prevent people from being able to book appointments in their own time zones. 

To prevent people from being able to book appointments in their own time zones please head into:

Settings > Select the Business Info tab > Scroll down and activate the "Disable Contact Time zone" checkbox.

With the "Disable Contact Time zone" box selected, users will no longer see the time zone dropdown selector in the calendar widget (see screenshot below), and all appointments will be made in whatever time zone is set within the location settings.

To see which timezone the location is set to please head into the Location Settings > Business Info> Time Zone field.

The screenshot shows after you have selected the "Disable Contact Time zone" checkbox on the calendar widget

This screenshot shows the default calendar widget with the timezone preference