2 wide box bay window

[djhplanning]

How would I go about having a box bay window with a 2 wide window vs. a 1 wide window?  I can use the box bay window tool and get everything I want but I am limited to only having a single wide window in the middle section of the bay. I want to have 2 36"x60" double hungs vs. 1.  See photo with 1 window only.  Don't seam to be able to copy and paste the window in the bay like you can with a regular wall.