Common Ways to create Dev notes and development documents

I am working on getting the most efficient process lined up to crank out a bunch of modules in a very short amount of time. How do you in this great community do so?  We currently use PP to create the slides, narrative, etc...  We then make text boxes on the sides indicating specifics (see attached).

I want to get the process streamlined and PP seems the way to do so.  What do you do to keep things moving?  A separate document like a traditional storyboard with notes or more like what we do.