Using TimeValue function to display hours and minutes spent.

Hi,   I am stuck with the following issue,   https://docs.google.com/spreadsheets/d/1TK1YrYzYgD-Sqgf4PmycPKbZ-iJH7ppD/edit?usp=share_link&ouid=101514595417469444876&rtpof=true&sd=true   The abo...