Manual:

Step 1: Go to Appointment-->Calendar

Step 2: Click on the New Availability button.

Step 3: Select the Start Date (By default Start Date will be selected as current date), Start Time and End time for which availability needs to be configured.

Step 4: Under Repeat Option :

     a. If you want to set the availability for only one day then select do not repeat option.

     b. If you want to set the availability daily then select the daily option.

     c. If you want to set the availability for particular days in a week then select the weekly option.

Step 5: Select the Repeat until date i.e., End date.

Step 6: Select Visit Type.

Step 7: Click on the "Save" button.

Video Tutorial :