You must be a Webmaster to do this.

  1. In the side menu click Org Resources > Manage Org Resources.
  2. Click the desired page name.
  3. In the upper right, click Pages Links.
  4. If you see the warning, " This page must be shown in Team Resources!" then click Enable or else you will not be able to share it.
  5. To share a link for which people must login to view, click the Copy button by the Private Link field.
  6. To share a link that anyone can view (even those who do not have an account), set Public Link to YES if needed, then click the Copy button by the Public Link field.
  7. Paste the link you copied into an email, on social media, etc. as desired.

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See Also
Org Resources Pages