MacOS Sites Path? Change to Library/Webserver/Documents/?

For the Local app - Can I not use the /Library/Webserver/Documents/ path for my local sites rather than the user based path? HardDrive/Users/~username/Local Sites/

The error message when I try and set a new Site path.
Invalid Path
Sorry you must provide a path in /Users or /Volumes

It seems like I’m having to jump through a lot of hoops to get the /Users/… path to work whereas the /Library/Webserver/Documents/ is working in my browser ( http://localhost/ )

I’m getting permission error currently when trying to access the Users/~username/Local Sites/

“You don’t have permission to access this resource.” which I know is another matter, but I wish I could select the other Site path (Library/Webserver/Documents)

I’m using MacOS Catalina v 10.15.3