This Planning QuickStart illustrates how to create assessment categories in a Room. Robust grade books are possible within rooms allowing for diverse assessment categories in their hierarchial relationship to each other.
This Planning QuickStart illustrates how to add sections to a Room. Sections correspond to the different class periods for, example, Biology I. So if I teach three sections of Biology I, I only have to have one room with three sections. This results in just one Planner for Biology I but three grade books each for one of the sections of students.