Sharing a manual will enable you to share content between sites at the manual level. By following these procedures, you can create content in a manual, share it between sites, and when you make updates to the manual in one site, the changes will be reflected in each site the manual has been shared to.
Select Add Existing Manual from the Manuals action menu
Select Manual > click Add Manual
Select the manual you would like to add from the Manual menu then click Add Manual. The manual will be added to your site.
The manual will have an arrow icon next to signifying that the manual is shared (or referenced) in multiple sites. Editing the manual in one location will edit the manual in every site it appears in.