Design Animation > Design Animation > Creating an Animation > Including Subanimations > About the Subanimation Dialog Box
  
About the Subanimation Dialog Box
A newly-created subanimation references the ground body by default. Use the Subanimation dialog box to change the reference body or the time frame.
1. Select the subanimation on the timeline. Right-click and choose Edit from the shortcut menu.
2. The Subanimation dialog box opens. Change the settings as required:
Select a new reference body.
Enter a new start time after the selected event. This can be negative with respect to the selected event, but cannot occur before the start time of the animation.
3. Click Apply.