Updating Google Sheets column from a row detail screen

I have a simple app.

  1. A user records readings from a machine and the data is saved to a backend Google Sheets.
  2. I have another tab that displays already logged data.
  3. In the detail screen of the already logged data, I want to have a text area that reads/writes data from another column 'Remarks'. If the column already has a value, the text area should display that value. Any edits to the text area should sync back to the column in the Google Sheets workbook.

I am attaching screenshots of the builder to share additional information that may be useful (screen names, component names, field names, etc.).