Here's a VIDEO that may help you- Searching clients in appointments timeline view on basis of zone or you can also use the following instructions to solve the issue.
1. Go to "Appointments" located on the left menu.
2. Click "Timeline view" located under "Appointments."
3. Go to "Choose Client" located on the right and choose your zone.
4. Then check the box "Show all filtered" and you're done.
(To clear the filter simply click "Clear Filters")
(You can use the scroll bar on the bottom of the page to scroll across the page.)
