Need an adjustable XOX Window family

[vanderloo5]

Does anyone have an adjustable XOX sliding window family they can loan me?
I need to be able to adjust the sizes of the 3 windows with the middle window being fixed (always)
I have one for 2 single hung windows with a fixed in the middle but not for sliders.I also have one that is 3 panels but they are automatically equal sized panels.
The occurrence I'm looking for would usually be 2' wide sliders with a 4' wide fixed in the middle.
Thank You

[PijPiwo]

Try glider window from Marvin.