To hide the tracks in a Track group, click the Triangle icon beside the name of the Track group. The tracks are not muted; the tracks are hidden from view in the Timeline Editor window. To show the tracks in a Track group, click the Triangle icon again.
Triangle icon hides the tracks in the Game Board Track group. A ghost track visually represents the hidden tracks.
Is something described here not working as you expect it to? It might be a Known Issue. Please check with the Issue Tracker at issuetracker.unity3d.com.
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
