Main toolbar > Open Track View > Track View toolbar > Edit Time > Select a track in the Track View Hierarchy. > Insert Time
Graph Editors menu > Track View > Open Track View > Track View toolbar > Edit Time > Select a track in the Track View Hierarchy. > Insert Time
Use Insert Time to insert and remove time from selected tracks. Inserting time adds time at a selected point in your animation. Removing time is a way of deleting time, or inserting negative time, in your animation without deleting any keys.
Procedure
To insert positive time into tracks:
In the Hierarchy list, select item labels to select tracks for time editing.
Click Insert Time.
Drag to the right anywhere in the Edit window to insert time into the selected tracks.
Time is inserted and the start point defined wherever you place the cursor and click.
As you drag to the right, time is inserted after the start point. The inserted time appears as a dark bar in the selected tracks.
All keys to the right of the start point in the selected tracks slide right as time is inserted.
Interface
Insert Time: Inserts or deletes empty time.