This is a custom link that you just clicked

This means that the button or link on the demo page can be used for any purpose you need it. Here are a few ways to consider:

Link to one of your post/article categories
Link to a specific post/article
Link to an outside community platform
Link to a sales page
Link to a shop you own on another platform
Link to your booking page

The possibilities are endless; if it has a link address, you can add it to any button, image, or hypertext anywhere on your website.