Sidebar Option to have section lessons "closed" as default setting

Hello,

Despite our best efforts for reducing the number of lessons in a given Rise Course, sometimes there are many lessons.

Typically in this case, we will group lessons with Sections.

Trying not to overwhelm the learner with the sheer number of lessons in the Sidebar upon entry into the course, we'd like to have the menu displayed but all lessons within a section "closed". 

(see attached image for illustration with sample content).

Is there some sort of setting within Settings > Navigation > Sidebar or elsewhere that can achieve this behavior?

Thanks!