I undertook a substantive Supervision training to Diploma level via Cambridge Supervision Training. I have experience of supervising trainee Counsellor/Psychotherapists (for which a previous role as co-tutor on a local counselling course has also proved helpful), and trained therapists.
I also supervise people in other helping professions e.g. doctors, nurses, care-workers who find supervision provides a useful space to reflect on their practice and any impact on themselves.
My preferred way of working is to offer prospective supervisees a free initial consultation lasting no longer than 20 minutes, via telephone or Zoom video, to ascertain if we would be a good fit to work together. Supervision frequency and session lengths can be discussed on a case by case basis, depending on individual need.