* Use the Rename, Move and Copy. I tried this, and there is no "Move a Folder" function. It is also, frankly, very non-intuitive. (It also asks if I want to "delete the remaining empty folder", when the folder actually still had image files, MD5 file, text files and so forth.)
The Rename, Move, and Copy tool is quite powerful and useful. You can set up Presets that create your desired folder organizational structure on disk based on tags (even calculated fields and the whole bit), and apply them to large batches of files at once.
The "Delete empty folders" part won't remove any folder that contains significant files that MC didn't create itself. However, it does ignore any files that it also moves as part of the rename operation (so cover art, for example). It is pretty smart and I haven't seen it cause havoc ever, but if you can come up with a case where it does, I'm sure they'd fix it if you post details.
So... You may want to play around with this a bit for the future.
If you only have one folder to do, there are a ton of ways, including what MrC suggested.
If you change the [Filename] tag, MC will move the file. You can do this with one or more files at a time. I prefer to use the Find & Replace tool in Rename, Move, and Copy because it shows a preview of the results first. However, you can just change the tag directly.
If you use the Rename, Move, and Copy tool, you can:
1. Use Find and Replace mode to do simple moves, or large system moves (from one logical volume to another, for example).
2. Build a custom path using tags with the Directories and/or Filename options. You can save these under the Preset button.
3. You can use a combination of the two systems if you want.
4. You can use it to create copies or move the files (via the combobox up top).
You can drag-drop in the Filesystem Explorer part of MC, I believe, but I haven't done this in years. I just use my presets.