Can I ask questions the list of examples does not include?
Yes. Company, job title, phone, country, industry, experience, website, LinkedIn and hoped-for takeaways are the usual ones, but the form takes your own questions as text, select, number and similar types. The examples are a shortlist, not a menu limit.
Does a longer form really lose registrations?
It can only add friction; it cannot subtract it. Nobody has a number for how much, and the product does not pretend to. What you can do is watch your own sign-up rate against page views across two sessions, and see which shape of form suited your audience.
Should I make the email field and one question required?
Name and email are always collected, and you can mark your own questions required. The safe pattern is one required custom question at most โ the one whose answer genuinely changes the session. Required fields are a locked door; use them once.
Where do the answers end up, and who can see them?
They arrive attached to that person's row on your attendee list, which lives on your dashboard and is yours to export. Attendees see the form's fields, not each other's answers.