This shape editing tools will not appear if you define the roof slope.
How to make a custom roof in revit.
Do not give any slope to your roof edges.
We can learn it with watching this video.
You need to create the bay window roof separately.
Generate revit roof in revit create a new mass and import the sat file from the previous step.
Open up the front elevation and hide the level in visual graphic vg.
Navigate to a suitable elevation view west elevation in the example next go to systems tab pipe draw your desired gutter downpipe run.
This is pretty easy to control.
You will see shape editing tools from in your ribbon contextual tab.
Create two vertical reference plans on each side of the center axis.
You may have to adjust its xyz location before finishing the mass which can be accomplished in plan or elevation.
Open up revit and create a new structural framing complex and trusses.
Tutorial on roof construction modeling in revit.
Your downpipe elbows should automatically generate via the revit autorouting.
How can make mansard roof in the revit architecture.
5 once located properly use the roof by angle tool to generate a roof using any roof type.