Design Animation > Design Animation > Creating an Animation > Locking Bodies > To Lock Bodies
  
To Lock Bodies
Use this command to keep one or more follower bodies stationary with respect to a lead body during a specific time period in the animation.
1. Click Lock Bodies. The Lock Bodies dialog box opens. Enter a new name or accept the default name, BodyLock#, where # represents an incremental number that increases as events are added.
2. Middle-click to define the ground body as lead, or select another body.
3. Select the follower bodies. Follower bodies are outlined in red.
4. Enter values for the Start Time and the End Time in the Value boxes.
5. Select reference events for each value from the After list.
6. Click Apply. The locking event is added to the timeline.