You must be a Webmaster to do this.

  1. In the side menu, click Website Design.
  2. Click the Site Navigation overlay.
  3. Click + Add Tab. or click + in an existing page row to add a sub tab below it.
  4. Fill in the fields.
  5. Click the Select Page dropdown and select an existing Team Resource page, or click + Add New Page, fill in the fields and click Save.
  6. When finished, click Save.

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See Also
Add a Team Resource Page
Team Resources Pages