Once webhook is enable on your account, you can access it form Menu -> Settings -> Webhooks
On the webhook page click on Add Webhook Button.
Then you need to fill out the required fields, details of each field is explained below.
Activity: Select the activity you want the webhook to work for, example: Check-in, Client Add, Expense etc
Webhook Url: Then give the webhook url where you want the webhook to send data, example: https://www.example.com/receive-data/
Content Type: Select content type, Either Post Method or Jason Method.
Webhook Secret: This is a key which will be send along with the rest of the data, which can be used for security purpose. this will be sent in a variable called secret.
NOTE: The Webhook should always return response code 200, else the webhook will be made inactive by the system.