Edit: Menu Appearance

Once you have entered the Website Editor

1. Click on APPEARANCE > MENU

2. Select the Menu from the drop down labeled 'Select menu to edit'

Then, you can click the arrow to expand the menu option.  Here you will also be able to Remove the menu

3. To add a new menu item - Custom Links, type the URL and Link Text (name of platform), Add to Menu.  

Once updated, click on 'SAVE MENU'

4. The Menu displays at the top right hand side of  the website.