Appointment time slot settings are required in the admin panel to configure the start times for appointments. The available options should include:
Option 1: Based on Service Duration

Example: If a service duration is set to one hour, available appointment start times will be shown every hour (e.g., 7:00, 8:00, 9:00).
Option 2: Every Custom Time
Allow admins to set custom Time for appointment start times.
Example configurations:
Every 5 minutes (e.g., 7:00, 7:05, 7:10, etc.).
Every 15 minutes (e.g., 7:00, 7:15, 7:30, etc.).
Every 60 minutes (e.g., 7:00, 8:00, 9:00).
These settings will give flexibility in offering appointment availability based on service needs and business preferences