Add SAFe demo to Plan doc

doc/topics/plan_and_track.md

@@ -11,6 +11,12 @@ with milestones and track your team's time. Learn how to save time with
 quick actions, see how GitLab renders Markdown text, and learn how to
 use Git to interact with GitLab.
 
+<i class="fa fa-youtube-play youtube" aria-hidden="true"></i>
+For a thorough demo of Plan features, see
+[Multi-team planning with GitLab Ultimate](https://www.youtube.com/watch?v=KmASFwSap7c).
+In this video, Gabe describes a use case of a multi-team organization that uses GitLab
+with [Scaled Agile Framework (SAFe)](https://about.gitlab.com/solutions/agile-delivery/scaled-agile/).
+
 ## Basic workflow features
 
 Planning features everyone needs to use day-to-day.
@@ -21,7 +27,7 @@ Planning features everyone needs to use day-to-day.
 - [To-Do lists](../user/todos.md)
 - [Using Git](../topics/git/index.md)
 
-## Team Planning
+## Team planning
 
 Get work done as a team.
 
@@ -38,7 +44,7 @@ Get work done as a team.
 - [Time tracking](../user/project/time_tracking.md)
 - [Wikis](../user/project/wiki/index.md)
 
-## Portfolio Management
+## Portfolio management
 
 Align your work across teams.