Allow Access List to be assigned for individual Custom Locations

Is your feature request related to a problem? Please describe. It seems only possible to assign Access Lists for the main domain, not for the custom locations. So, I'm not able to restrict a specific subpath, while leaving others publicly available.

Describe the solution you'd like It would be great to have the possibility of adding an access list per individual custom location.

Maybe include a dropdown like this:

Describe alternatives you've considered I'm manually copying/pasting a snippet on each custom domain, and if something changes, I have to change everything manually once more.