how do I delete or move public files on keybase?

Please help explain how I either delete or move public files on keybase. I have just uploaded a bunch of sensitive files, to what I thought was a private folder, but turns out it is public.... I now want to either move the files into the private folder or delete them, but there seems to be no option in the interface to do this. I'm working on a mac book pro, about 4 years old. For some reason, keybase won't link to the Finder in my Mac. Please bear in mind I am not a tech nerd, so please explain it in dummy terms.... Many thanks in advance!

No source file, test, or entry point is identified. Verify the current Keybase macOS interface and Finder integration, then document simple steps for moving or deleting public files and explain what completion looks like for both actions.

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