Graphing Problems

I have trying to create a graph(see below). I am able to filter student groups(PAE or PAP), but I also would like a pull down menu so I can filter by individual student as well. Does Knack have the ability to filter a graph using two variables?

With Thanks 

Michael

![](upload://41b3RJIu9OxbIhPsZRP8U5UsOsy.gif)