Step 2: Select Design & Branding from the left side menu and click Edit Design
Step 3: Go to the navigation section, click "Change"
Step 4: Customize the navigation
After clicking change, the header navigation settings will appear. Users can then modify the display order, or add new pages from the right hand navigation via drag and drop.
Navigation placement shown in header navigation settings will mirror the placement on a live site.
Step 7: Save Updates
Select the Save For Entire Site button to see the updates to the navigation.
Step 8: Save Changes
If satisfied with the changes, exit the design editor.