Query to implement multilevel marketing

Question

Help me with the query to implement ,multilevel marketing.eg:Amway. Each user is restricted to be reference of 4 users.the root node is registered by giving registration fee of 100 rupees. And he can add 4 users under his reference. And he will get 10% as reference fee and 10% as loyalty.so by adding 4 users the root node will get 80(40 as loyalty+ 40 as reference fee).remaining 320 out of 400 will go to admin.like wise the tree will grows.only the upper node will get 10% reference and 10% loyalty.next higher level get only the loyalty while adding a user.