By default, Focus blocks all listed websites. But sometimes, the opposite is wanted---you want to only allow a handful of websites but block everything else. This is where allowed websites are helpful.
Remove all websites, and then add a single new website with a wildcard:
After that you can add any sites you want with a
+ before it. Review the screenshot below for an example.
Allowed Site Exceptions
The regular default blocked list mode also offers Allowed Site Exceptions, which allow you to allow only a few URLs. This is useful in cases where you want to block an entire website, except for a few pages (like all of Facebook except for your business page)