The Weights tab contains a choreography weight slider for each choreograph of the current project. Decreasing the weight of a choreography from the full level 1.0 reduces the effect of the choreography. At zero level, the choreography no longer animates the target object.
Choreography weights can be animated as well. You can achieve this by creating a new keyframer choreography and adding the desired weight attributes to it in the Animateable attributes tab. Then you can edit the weight curves of the Weight Curves tab. You can also change time and weight values while animation recording is turned on.