Textboxes in Word are powerful tools, but there are some things they can’t do. And these are things you might well need to do in a thesis. For example you can’t add a footnote to text in a textbox and you can’t add a comment, which can be a pain if your supervisor wants to comment on something in the textbox. As well as this, any citations you put in textboxes will not be correctly numbered if you are using a numbered citation format.
To get around all of this I use a table with only one row and one column (ie one cell) instead of a textbox. There are a couple of different ways to do this.
The first way is to add a blank one cell table using the Insert>Table menu. The type your text into the table cell.
The other way is to select the text you want to put into the text box. The use the Convert Text to Table tool on the Insert>Table menu
In the next window that comes up, in the options at the bottom of the window, change the setting to Separate text at Paragraphs. You will notice that the Number of columns (at the top) then changes to 1. Then click ok.