I read in help file that Stop on Match option in label settings lets you stop parsing rules with less priority if a file/folder matches that particular filter rule or wildcard rule.
But I just noticed Stop on Match option in menu generated by Properties Setlabel
I can't find anywhere how it works and it's not so obvious to me.
Set a label on a file, then set Stop On Match on the file. It will then only have the label you explicitly set on it, and not be affected by any others.
We have four categories Preferences -> Label Assignments (by categories I mean these collapsible separators in the list):
File Paths
Folder Paths
Label Filters
Wildcard Filters
The option mentioned disables only Label Filters, leaving the three others in effect.