This action let's you select files, that you want to batch rename. It renames all the files based on the following rule
[parentParentFolder]_[parentParentParentFolder]_[increment].fileExtension
So in case of:
cathegory
- location
- RAW
- file.png
- RAW
the name will be location_cathegory_##.png
Files are batched (stacked) based on file types. So in a rename you can have a stack of exr files and png files.