'Timestamp, Date issue in Google Sheets

I am trying to get a timestamp to show in Col K5:K50 (TimeSubmitted) when col E5:E50 (Total Topics) is edited by a student from a tab each student was assigned with an =IMPORTRANGE command I made for them. I can get the timestamp to work but when I open the sheet each morning it automatically updates everyones time/date in the Time Submitted ColK

I only want this to work in the "tab/sheet" that is named "Quarter4 Daily Report2" at the end

https://docs.google.com/spreadsheets/d/1Lswf1O2orQN2IdGYd7gGIeqQibgVvYxcHOrMPHfUEJ8/edit?usp=sharing

I have tried other scripts than the one that's loaded but I don't always know how to edit the script to work with my google sheet. Stephanie

I tried several scripts but couldn't get the correct Row and Columns to match and work in my google sheets



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