I want to insert text box instructions on a docx doc so that users of the docx have a guideline of instructions, but then to go back and click "hide" so that when the docx is modified, the instructions will go away and only the docx with remain as clean.

This function would be similar to tracking changes, where you can show changes or not. I don't have to use a text box, but this sounds most convenient, though I want them to dissappear upon the click of a button.