In your Apollo Apps app, you can add a Favorites (bookmark) section.
A Favorites section allows your users to bookmark the content from other sections of your app.
You can put content from various sections into the Favorite section : Articles, Videos, Photos and Podcast.
When users save content as a Favorite, they can retrieve it in the Favorites section even after the content has been removed from its original section.
NB : You can add only one Favorites section per application, and of course you can rename it as you like and change its default thumbnail.