Steps for using Webhooks

Step-1 and 2 : Click on the Settingsand select Team Settings

Step -3: Click on the Webhook settings

Step-4: After clicking on the Webhook Setting you will able to see new tab "+Add New Webhook"you will have to click on it to add new webhook

Step - 5: After clicking on the Add new Webhook you will get a popup, where you will be pasting the webhook endpoint URL, then click Continue