You can make any file or folder a favorite from your desktop or from SkyVault Mobile.
Tap 
to
favorite a file or folder.
Tap Favorites to access all your favorite content. Favorites aren't available when you’re offline.
Note: Previously in SkyVault Mobile synced content was based on your Favorites. Now you can
select to sync content individually and it's available in the new Synced
Content area.
Content that was previously synced because it was favorited is still available in Synced Content. Any files or folders that you favorite from now on will be available in Favorites, but not in Synced Content. SeeSynced content