turbodig

Could someone point me to how I go about drawing (in HD Pro) a rectangular garage that has attic trusses on one half and scissor on the other? Not looking for a step-by-step, just conceptually how I approach it? Is this full manual roof plane thing where I do the roof in sections, or is there an easier way to go about this? I found the individual how-tos on scissor and attic trusses, but I'm a bit stumped as to how to put them in the same structure. Thanks! Scott