Place these into your Fixture Profiles/User folder and restart Beam. The fixtures should then be available for adding in the Patch Editor.
In case of COLORado PXL Curve 12, you just need to add Chauvet Professional COLORado PXL Curve 12 - 101ch to the patch, the other files are its components.
If you want individual control over each of COLORado PXL Curve 12 heads’ tilt, zoom and RGBW, double-click on the fixture in the Patch Editor and assign tags like so: