You can control a selected number of UAD 2-powered and other third-party plug-ins from the Console 1 Mk III. Apart from the Console 1, you need a UAD Accelerator (Satellite or UAD-2 PCIe card) or an Apollo interface for the UAD 2-powered plug-ins, and you need to own the Console 1-ready third-party plug-ins you want to use.
With that in place, it's plug-and-play. The Console 1 system will automatically identify the Console 1-ready plug-ins that are installed on your system, and they will be pre-mapped for you. Just open them from within the Console 1 system and mix away.
You can find a list of all UAD 2-powered and other third-party plug-ins here:
Custom Channel Strips in Console 1