To batch unlock numerous files within subfolders/folders/directory, follow these instructions:

1. Using Finder, the top level folder of those files that you want to unlock. Switch to List View mode (cmd-2).

2. You should now see a finder pane containing only those files and folders that you want to unlock.

3. Cmd-a to Select All.

4. Open all the sub-folders. With all selected, opt-command-right arrow to open up alllll the children.

5. Cmd-A to select all

6. Opt-Cmd-I to bring up the single pane inspect

7. Unlock

8. Have fun. (optional)