1. Select an object.
2. Click Animate in the main tool palette.
3. Click Offset Keys in the lower tool palette.
4. Enter an offset value and a frame range. To alter all objects in
a scene, enable the All objects option. Click OK
to accept or click Cancel to abort.
5. All keyframes for the current object, or all objects, between the
inpoint and the outpoint will be offset by the value defined.