The next things we need to add are text boxes. While you could try typing text directly into any of the cells surrounding the diagram, the end result probably won’t look very well formatted. Plus, if we use text boxes, the information can easily be moved around to different locations of the diagram, if needed, without having to move the rest of the diagram.
To add a text box, return to the Insert tab on the Excel ribbon and click on Text Box.
Click on the place in the spreadsheet where you want to insert the text box.
Click and drag any of the corners of the text box to resize it to your desired size and shape.
We didn’t worry too much about formatting any of the other objects yet, but it’s a good idea to apply some basic formatting to the text box so you’ll be able to see it easier on the diagram when it’s not selected. With the text box, still selected go to the Format tab under Drawing Tools on the Excel ribbon.
From the Shape Styles category, select a formatting style for the text box.