Affiliations go many-per-person — the single-org slot becomes a stack of cards, orgs autocomplete instead of retype, and one org can own many email domains
The relationship between people and organizations is a lie at the data model level. How careers work: people sit on boards, advise, change jobs, keep a past CFO title. Tonight the single org slot becomes an open-ended stack of affiliation cards — each with its own free-text role written straight onto the graph edge, each able to find-or-create its org. Start typing a name and existing orgs autocomplete from canonical (so you pick 'Institute for Humane Studies' once, not retype it on every attendee).