Once you Create a Calendar you can set your Availability. This lets participants know when they are able to book a time with you.
Day Availability Settings
Set your Availability by going to the project > Calendars > Edit > scroll down to the Availability section.
Each individual day defaults to a 9 AM to 5 PM interval of your local time, but you can edit the interval and specify settings for specific days.
To do this, click on the day in the calendar. Once the settings are edited you can apply the settings to either all of the specific weekdays or only the day you edited.
Interval: An interval is a block of time when you can conduct interviews/group sessions. By default, this is 9 AM to 5 PM in your calendar's timezone.
Increments: Increments are the blocks of time that participants will see available on the calendar. For example, if the interval is 9 AM to 11 AM, with a 1-hour increment, the participant will see two options - 9 AM and 10 AM. If it's the same interval with 30-minute increments, they will see 4 options - 9 AM, 9:30 AM, 10 AM, and 10:30 AM.
Make sure to include your PRE and POST buffer times in each of the Increments.