The article outlines the steps to find or open recent items.
Recent items show the last 20 items opened on your Sync profile
FOLLOW STEPS BELOW:
1. Navigate to the Sync home
2. Auto Hide or dock recent items pane
3. Close Recent items pane
4. View your recent items
5. Click on the item you want to open
*if you close the recent items pane you will need to logout of Sync and back in again for it to show
NB. For a quick tutorial watch below