Develop a databse on the knackhq.com platform

I need a online database that lets me and my employees login into to each their account and register their sales of different kind of products. Each product can have a different value, though usually between 50 and 350 (always a number). The users are in a bit complicated hierarchy, where every user needs to be able to log in and see their numbers, and can register the numbers for employees that are registered as their children, but only their "parent" can register the value of them. From the top level, there need to be able to go down to 5 levels of children. But there is no need to the data to "match up". So say that account Bob registers that his child, Rob has delivered on product A 10 sales of the value 230, and 4 on 100, and on product B 7 of 200. This values only exits on Bobs account and Robs. So if Rob also have a child, the value that Rob registers on him, does not need to mach up on the value that Bob registers on Rob. They exits independently. The full description is to be found here: [login to view URL]