A timeline provides learners with a graphical display of the courses they've completed. If the account's points and rewards functionality is enabled, the learner will also be able to view their earned points.
To add a timeline page to a dashboard set:
Add a page to one of your categories.
From the Add/Edit Category Page workscreen:
Expand the Main Settings accordion.
From the Type list, select Timeline.
Click Save.
The above settings are what is required to display a timeline. Refer to Page: Configuration for Timeline Pages for details on the other available configuration settings.