Changing the Instance Transform X parameters and add keyframes will animate all instances. During these moves it is possible to calculate a motion-blur.
The parameters are the same as those described in the layer Motion-Blur section. Required calculations may take longer depending on the number of instances, so consider optimizing them by setting the Quality according to your needs.
You can also temporarily disable motion-blur calculation in the Viewer in order to make Autograph more reactive during animation setup.