When you enable online appointment booking, clients can schedule an appointment directly with you from your website, their ** Client Area ** etc. Find out here how to configure the settings for online appointment booking.
IMPORTANT : Make sure you have enabled in settings
your ** online availabilities **

To enable online appointment scheduling, you must create a schedule with a unique activity. This way, you can include a form to fill out, a minimum payment, etc.
A- Click on the program tab in the module menu 
B- Create a new program 

1- Give it a name, for example: (Online appointment booking, qualification call, discovery call, prospecting call, strategic call, etc.)
2- In the type of program, choose “Single activity”.
Fill in the information in the different tabs

In the Information tab
indicate a description of the activity that will be visible to current or future customers.

In the Activities to create tab
Enter activity details
In the “Payment plan” tab
Indicate the fees associated with this activity.
In the Online registration tab
Indicate if you want this program to be visible online in order to generate its web link.