Restrict tagging to a specific folder


I want to use the automated tagging to tag all files which are going into a specific folder “Temporary” with a tag “30days”. This tag sets the retention to this period and the file/folder will then be deleted automatically.

But I don’t see a filter rule which limits the basic “file is accessed” rule to a certain folder. I don’t want to tag all my files in any folder (that would be a nightmare), the automated tagging rule should only work in one specific folder and its subfolders.

What am I overlooking here?