How hard would it be to get the Membership ID field to act as the User field in backend add new subscription? I would like to be able to select a subscriber based on membership id and load previous data.
I'm not sure what to call that kind of field, lookup field? I'm been googling but I can't find anything about doing a field like that. Any ideas would be appreciated. It might seem like an odd request but I handle a purely offline plan with customers that don't have an email adress.
