How to Animate the Appearance of Objects with the Animation Director
This tutorial explains how to animate the appearance and disappearance of objects with the Animation Director.
This tutorial shows you how to animate an Ortho Slice through the data volume, make it disappear, and then have a Volume Rendering appear. This is accomplished by creating keyframes to animate the "Visibility in Viewer x" ports.
Additional resource: Learn the Basis of Using the Animation Director