You can move comments that obscure the body
of the PDF. You cannot delete other reviewers’ comments in a shared
review or locked comments.
To move a comment, select it, and then
drag it to a new location. You cannot move text-markup comments
such as highlights or insertion carets.
To delete a comment, right-click/Control-click the comment,
and then choose Delete. Or, open the Comments List, select the comment,
and then click the Delete button .