Selection of folder where to keep duplicate files

Hello,
I tried to find and delete duplicate files in three directories. Unfortunately, the name of the directory where I wanted to keep files, is alphabetically between the names of two other directories. Therefore, I could not put the files from the needed directory on first place in the collection folder by using the “location" column for changing the order of file listing. I solved this problem by performing “find duplicates” consequently on pairs of directories. But it is a little bit cumbersome. My question: Is there a trick to put the files from the location where I want to keep them, on first place in the group? If not, it would be nice to implement this option. I admit that search for duplicate files in more than two directories is needed not very frequently, though.
Best regards, Toller

It's not always suitable but if I needed to do this I'd probably just temporarily rename one of the directories so it sorted first (or last).