Appointments+ service providers see each other's appointments?

Is it normal for service providers to see each other’s appointments under the “My Appointments” section? From settings, I had A+ create an appointments page with all of the features, and at the top is the “My Appointments” section.

On line 1258 of the main file (appointments.php), I find this comment:

// Special case: If this is a single provider website, show staff appointments in his schedule too

If I’m understanding the code right, it refers back to the app_workers table, where I have 5 service providers.

Is there an easy way to toggle this feature? I’d really like service providers to only see their own appointments when they’re logged in.