[Appointments+] Appointments+ Calendar Show Available Times Auto-Refresh

When a user selects a service on the drop-down menu, they must click "Show Available Times" in order for the available times to switch for that service. This is confusing for users because they just click a service in the menu drop-down and don't know to click "Show Available Times." Is there a way to make this selection automatic when they click on a service in the drop-down?