If you want to delete a comment for a completed or a skipped activity, select Completed.
Select , and then select Add/Edit Comment for the activity.
Optional: In the window for entering general comments, select the General check box to filter comments in the existing comments list by the general type.
A list of general comments for the activity appears.
Select for the comment that you want to delete.
A message appears, asking you to confirm that you want to delete the comment.