title: placing a button on each row (in a cell) in Google Sheet that, when pressed, gets system time and places in adjacent cell in that row
body: <p>I was directed here by GAFE engineers as scripting wasn't directly supported by Google. I've started looking at the script editor and thought I need some direction to get where I want to be.</p>
  
  <p>I would like to have a time dropoff, adjustment, time pickup, &amp; total time cells in each row where there is a button next to the total time cell where when clicked would get the system time and place it in that row's time dropoff cell. Then it will calculate total time as <code>((time pickup - time drop off) - adjustment)</code>.</p>
  
  <p>What is the easiest way to do this?</p>