Location:
Item location isoption.
Choose...button.
+button.
search in subfoldersoption.
For each duplicate group:
reportoption.
all but oneoption.
This box reports all but one item of each duplicate group, which resides in the chosen location. If a duplicate group doesn’t contain any item residing in the chosen location, no item belonging to that group will be reported. This ensures that at least one copy of each item with its characteristics is left untouched on the disk.
One of these options or both can be included in any other scenario in this section and is a good approach for a safe deletion.