trying to put put a gable end on the near end of the long roof?
Use 2 roofs. A main roof with gables on each end then another roof for smaller roof.
Bill is the owner and maintainer of SoftPlanTuts.com
now how do I make the roofs blend nicely?
Edit the edge where the smaller roof intersects the larger roof. Change it to an Intersect. Set the pitch to Auto Pitch.