Sharing & Permissions: (Name) com.apple.sharepoint.group.11 (Privilege) Custom How would this of been created?

So in located: /Users/my home folder name/folder name

the file "folder name" I clicked on get info and it had listed under Sharing & Permissions:

Name: Privilege

com.apple.sharepoint.group.11 Custom

Sharing & Permissions: (Name) com.apple.sharepoint.group.11 (Privilege) Custom

Yes the others listed: (Me) is there with read write privilege & everyone with no access. As expected.

How would or what could be com.apple.sharepoint.group.11 with custom privilege? How could this have been created?

I'm running macOS 14.1.1 (23B81)