Hi there
I need to build a membership system such that the new members can only be registered through old users' invitations.
The reason for that is, each new member should pay an amount and the old user(which sends the invitation) gets part of that registration money as a gift (urging old users to find new members)
Later on I'll try to use the membership such that the new members will send invitations and the oldest user can also get part of the registration money (but the amount will be decreased as it goes far from the first person). Everyone will win something from new comers but according to their level.
How can I build such a membership model? Are there already such models on the web?
Where can I find or how can I build it?
All kind of asistance will be appreciated
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