Church referee - this can be a church leader/elder/person in leadership of the current church you attend. If you're at university, this should ideally be your university church.
Personal referee - this can be a friend, employer, work colleague etc. They should be able to comment on your character and suitability for volunteering. They should not be someone else who has/is applying to be a volunteer. Please indicate the context in which you are known to them.
Do not use family members, current CUI staff or Formation workers as referees.