The Bookmarking and sharing feature is new in SamePage 3.6.
This feature is available as a button towards the end of every page. This button can be seen only if the appropriate property is enabled in the 'Account Settings' screen by the Domain administrators (for On Demand users) or through the 'System Parameters' screen by the System administrator (for On Premise users).
Clicking on this button will enable the user to bookmark the current page to any of the listed external websites.
Click on the 'Share' button available towards the end of the page to open a list of all the supported external websites. Select the website and follow the instructions to bookmark that specific page to that website.