Go to Appearance >> Menu. Create and save a menu with your desired links. For a full video tutorial on navigation menus, please click here.
Primary navigation menu: This is the menu under the site title/logo.
Secondary navigation menu: This is the menu at the top of the page. It only shows up when you scroll down a bit, then it floats on top of the page.
To Get The Numbers To Show Up On The Primary Menu…
You will need to first scroll to the top of the menu page and click “Screen Options”. Where it says “show advanced menu properties,” make sure “Description” is ticked:
Then, expand each navigation link. Type a number in the description box: