This is a screenshot, a picture, not a document.
Attach a Sample File Demonstrating the Problem - Here's How

Is the signature block at the bottom to be filled in by hand when signing off? If so, I assume that it is in the footer rather than the document.

You could have the table rows so they can expand to hold content and break across pages. As it is, your textbox comments are not going to connect to specific rows.
You could use the Comments feature in Word to add comments, as well. These can be attached to specific text.


Text boxes make for somewhat more fragile documents than tables. (This is the report of Word MVP Doug Robbins who has fixed many word documents with both.)