The easiest way is to use ComfyUI Manager to install, otherwise just clone into ComfyUI's custom node folder.
These custom nodes enable Stable Projectorz to work with ComfyUI Directly.
StableProjectorz sends controlnet images/masks and inpaint images/masks to ComfyUI nodes, and then ComfyUI process them and sends them back to StableProjectorz.
All settings in Stable Projectorz are accessable through ProjectorzParameter node and ProjectorzControlnetParameter node.
Enjoy!
Sample workflow for Generating with Controlnet(the default way with Projectorz)
Sample workflow for inpainting(Projectorz brush fill)