selected_family_id when creating a real estate video.
Presets are available to every plan in List Families responses, and using one on a video requires a Pro, Max, or Enterprise plan.

young-pro-couple2 adults, late 20s / early 30s
family-with-kids2 adults + 2 children
single-parent1 adult + 1 child
retired-couple2 adults, 60s
same-sex-couple2 adults
multigenerational2 adults + 2 children, extended family
luxury2 adults + 2 children, affluent styling
solo-professional1 adult professional
