> Turn on face recognition & upload your first face via Face Library → Add Face.
> Train and improve accuracy: New detections appear in Face Library → Train with a confidence score-assign each to a new or existing person to refine future recognition.
I have a love/hate relation with Frigate, I use it since 2 years but since the business model of the developer is provide a "good model" using a custom one is not possible (at least not in a easy ways AFAIK).
I use my cameras to track a family member with a medical condition, this is why I do not feel confortable uploading those image to the "Frigate+" service to eventually get better training.