Whether your business has one location, or many, a service set must be assigned to a location in order for it to show up in your app.
Click on Locations in the left-hand navigation bar in the Merchant Admin.
Existing locations will be shown.
Click the location where you would like to assign your service set.
The Edit Locations page will be displayed.
Under the Details tab, click on the Services dropdown box.
Select the name of the service set that you would like displayed within this location. In the example above, the service set titled "Our Services Set" will now be displayed under the Mountville location in the app.