Keynote Legend Automatically include Children with Parents

We are starting to use the Keynote Manager and love that it allows to use sub-keys (children) as we thought that would allow us to break up the additional code or note information associated to our keynotes.

Upon using the legend now, however I see that the Children do not appear with their Parent Keynotes…

Is there any way that we could modify the keynote legend so that all Children Keynotes are automatically displayed when the Parent Keynotes are used?

With gratitude,