You can create new lines delete existing lines and use the trim edit tools to adjust the profile as required.
Revit hip roof truss.
The hip girder truss and the first mono truss have a model line offset of 75 so the trusses do not overlap.
Remove a truss and leave beams in place remove a truss family from a project and leave its chords and webs in place.
Not all truss families properly transform into a profile sketch.
Attach a truss to a roof or structural floor attach a truss to a roof or structural floor to force the truss to conform its chords to that element.
Edit the extents of a truss in a non plan perpendicular elevation section or 3d view.
Edit a truss profile.
When placing mono trusses start the model line from the bearing wall and draw it inward or the truss will go in backwards.
An in depth tutorial in revit showing you how to create a timber frame structural roof using trusses and how to create railings to border the stairs openi.