Stacks & Lines options

[mazda_gtx]

Hi there i have a graph that monitors Active modems in a Cisco AS5300.
there are 2 of them and i am useing the stack option to put the second set on top.

I also have it check the in active modems. What i would like is to put the inactive modems on it also, but when i do this there is no way of doing it in the stack area.

Can some one help or am i making no sence.