Link is an action that will award users for visiting a link.
When you create a new link, you will have to add an URL, title of the action that the user will see and the button text.

Once that’s done, users will be able to see it as this:

If they click on it, they will see the button to visit the link.

Only when they click on the link, the action will be validated and the user will be able to complete it.