You can install GitHub Addons via WowUp.

This Version won't work on Patches prior to 12.1

If your frames are not appearing on screen at all, you likely just need to change the Anchor Parent

Fork of Unhalted Unit Frames as development of it has halted. You may create Issues or Pull Requests on this GitHub - However keep in mind that I will mainly just maintain this Addon and not actively develop it. Unless a feature request is extremely important or fully completed in a pull request already, it is likely I will reject it. Any issues that came from previous versions will be ignored. Please do not report those.