Greetings,
This was discussed a while back; forum has topics back under version 1.5...
I'd really really like to have the paid button do the following:
Mark person paid.
Change amount they paid to whatever is owed.
Change the user status to "active."
Send notice of receipt of payment, change of status and a thank you.
What if they didn't pay the whole thing, etc.? In that case, just open the record as we do now and edit as needed.