Thanks, you can read more about it https://nolowiz.com/how-to-use-custom-stable-diffusion-models-with-sdimagegenera...
In another known SD interface, the simple fact of dropping a personal model in a folder intended for the personal ckpt, makes the model automatically available in the interface.
So I looked for why this was not working in SDgenerator, and I found the solution by opening each file that could have modifiable parameters, related to the Switch Model menu interface. I thought I would have to modify other files, but no!