Segmentation in my *edits* on my iPad

Hello, 

New to LR and photography and find the app amazing! One thing keeps bugging me so I'm hopeful someone can provide a solution to a simple storage issue.

if I open LR and go to *my edits,* I choose the *3 dots* in the top right corner, then *segmentation* then *by month.* When I close the app and return to it, the segmentation defaults to *by day.* 

How do I save *by month,* please?

Thank you!

Bruce