Bulk Rename Utility

Hello!
Attempting to simultaneously rename file extensions within multiple folders proves a challenge.
Is the operation within BRU's capabilities? Is it possible to select multiple folders (or alternatively a single folder containing multiple subfolders) in order for all files within those folders to have their extensions renamed?
Thanks in advance!

Yes. It is worth reading the help system.
Look at Filters (12). Tick the Subfolders box.
Now you see all the files in every subfolder, and changes can be done to all of them.
BE VERY CAREFUL.