Maybe I've found the solution already from article: https://resource.dopus.com/t/folder-formats-detailed-guide/11718, especially from this image
.
However, I wonder why this additional option, as depicted in this image 
is not generally available when editing the folder format directly from preferences->folder format.
First I do not see this option at all when modifying my already customized favorite format
and second when editing the path format for my collection, this option is greyed out.
Michael