Max Formula for Yes/No fields?

edited 12/09/19 in Smartsheet Basics

Dear all,

I have a rather complex sheet that contains some hundred rows. Each row represents a certain entity that is described by some text columns (5). The next 10 columns are yes/no columns, where any combination is possible due to decisions made by that entity. At the end some columns with dates following.

I am now faced with the following issue and hope you guys are smarter than me :)

For some of those entities a second or third row is need to capture decisions made at a different date than before. For reporting reasons those kind of details from before need to be preserved. I have already created children rows for the new entries but falling short at the way to find a way that for the yes/no columns the parent row should reflect the max value of the children rows.

Is there any way to get this working without creating another 20 columns?