Task: I have finished chapter one of "The Queen's Gambit" book pdf file, so add the comment "FINISHED" at the end of the first chapter on the Adobe Acrobat app.
Steps:
Scroll up
Scroll up
Click on the last page of the first chapter.
Click on the comment button at the bottom.
Click at the end of the last page of the first chapter.
Type FINISHED in the Comment box.
Click on the Send icon.