Apple Motion 4 - Manual (Page 426)

In the next image, the Orbit Around behavior is trimmed in the Timeline to a shorter
duration (190 frames) than the object to which it is applied. Notice the change in the
shape of the animation path: At frame 190, where the Orbit Around behavior ends, the
object (the circle shape) stops moving around its target and continues moving off the
Canvas. The Orbit Around behavior—the active force—is no longer present, but the
motion of the circle does not stop.
Moving Behaviors in Time
In addition to changing a behavior’s duration, you can also move its position in the
Timeline relative to the object under which it’s nested. This lets you set the frame at which
that behavior begins to take effect.
To move a behavior in the Timeline
1 Click anywhere within the middle of a behavior’s bar in the Timeline.
2 Drag the behavior to the left or right to move it to another position in the Timeline.
As you move the bar, a tooltip appears and displays the new In and Out points for the
behavior. The tooltip also displays the delta value, which shows the number of frames
you have moved the bar.
Changing the Offset of Parameter Behaviors
Certain Parameter behaviors have two additional parameters, Start Offset and End Offset,
which are used to change the frame where a parameter behavior’s effect begins and
ends.
The Start Offset parameter has a slider that lets you delay the beginning of the behavior’s
effect, relative to the first frame of its position in the Timeline. You can adjust this
parameter to make the Parameter behavior start later.
426 Chapter 9 Using Behaviors