Step 1. Click the blue Plus Sign (as shown below) to open a pop-up box where you can add links

Steps 2 - 5.  Name your link; add the URL (web address); decide if you want it to open in a new window; decide if you want it displayed in your top of page menu; click Save Changes.

After clicking Save Changes your new link will appear in the My Links menu at the top of your page, as shown here: