This is something I just accidentally stumbled on, by logging in as one of my members.
They are in the default Ning Migrant quota. If they want to subscribe to a paid quota that's no problem.
However, if they want to switch to either a free member or free artist quota they don't have that option.
If I make it a subscription option, then they have to enter their credit card info and pay a repeating subscription of $0. which makes no sense.
If I don't make it a subscription option, there doesn't seen to be a way of letting them make that choice.
Also, how can they get a default pop-out message (help tip) on log-ins. One that tells them to choose one of the free or subscribed quotas, and links them to the selection page?
updated by @ken-rich: 07/09/16 09:21:02AM