Hi @faraco123,
I have made a small addition to the solution on what @stephanealoo has shared. It just tries to confirm you if you are OK with the cumulative 100% even if it does not check all the 5 line items.
In the survey tab of your xlsform:
In the choices tab of your xlsform:
Data entry screen as seen in Enketo: (when 100% is met without having to fill up all 5 line items)
Data entry screen as seen in Enketo: (when 100% is met while filling up all 5 line items)
Reference xlsform:
Cumulative100Percent.xlsx (12.2 KB)