Main toolbar > Open Track View > Track View toolbar > Edit Keys
Graph Editors menu > Track View > Open Track View > Track View toolbar > Edit Keys
Edit Keys displays your animation as a series of key dots and range bars in the Track View Edit window. Only controller items (items with a green triangle icons) can display key dots. All other items display range bars indicating the time span of key dots for controller items in their subordinate branches.
Edit Keys is useful for getting a global view of your animation because it displays animation timing for all tracks. Use this mode for key and range editing when you want to view your changes in the context of the total animation.
Use Edit Keys mode to:
Select and change one or more keys
Drag range bars to change all animation in multiple tracks
Procedure
To turn on Edit Keys mode in Track View:
On the Track View toolbar, click Edit Keys.
In Edit Keys mode, the following buttons are displayed: Add Visibility Track, Delete Visibility Track, Align Keys, Delete Keys, Move Keys, Slide Keys, Scale Keys, Modify Subtree, and Add Keys.
Modify Subtree is also available in Edit Time and Edit Ranges mode.
Interface
Edit Keys: Switches Track View to Edit Keys node. The Track View toolbar to the right of the Lock Selection button changes to reflect the current editing mode.
These options are available in Track View when Edit Keys is selected: