From the left-hand menu, go to Alerts ->Destinations tab, where you'll see a list of all the available destinations.
To create a webhook alert destination, click on the Webhook card, which will open up the configuration modal. You'll be prompted to configure the following options:
Webhook name - Must be unique and cannot be changed later
Webhook URL - Paste the Spike integration URL here
Description - Optional parameter, but you can use it to provide more information about the webhook configuration
Add webhook and save the destination.
If everything works as expected and you've received the event, click on the Add Webhook button. This action will add the new webhook destination to the Active Destinations list.