The "Automatic" option allows you to set the times customers see in intervals of anywhere from 15 minutes to 8 hours.
Here's what your customers would see if you chose the "Every 15 minutes" option and your business opened at 10am.
There's one exception to the Automatic increments, and it occurs when you have an appointment with a duration that's in multiples different than the increments. For example, in the example above, if you were to already have a 20-minute-long appointment at 10:00am, the system would display the very next available time — 10:20 — then resume the incrementation based on your opening operating hours. So, after 10:20, clients would see 10:30, 10:45, 11:00, etc. The system does this in order to maximize your scheduling capacity.
The "Manual" option allows you to enter each time at which you wish to have appointments begin. The trick here is that you have to enter every single start time you wish to have because only the times you input will be displayed. This option gives you more flexibility, especially if you'd like to have different start times on different days.
Here's how you'd set this up if you wanted Monday, Wednesday and Friday's appointments to start on the hour and Tuesday and Thursday's appointments to start on the half hour (you can also start on the 15 or 45 minute mark if you wish).
Another important thing to remember is that start times will only be displayed if they are within business hours and not otherwise voided by the Offline Mask. That's to say that even if you set up several start times on a day when your business is listed as closed, customers won't have the option of scheduling on those days.
Watch our quick video tutorial on this topic: