I hace to process a project made with two differents cameras. one of them is with pictures georeferenced in PPK and the other no. How should I tell so to the process?
You just need to import the images. The software will detect 2 camera models and will process all images with the information taken from the EXIF.
You should process with the Standard option and not the Accurate Geolocation and Orientation option as not all your images have very accurate coordinates.
Keep in mind that when processing images from different sensors the content needs to be similar as the software will try to find common points between all images.
I hope it helps