In Pre-arrival form, I only need the information of main guest including guest name, age and email, not other additional guests. Imagine a villa with 10 guests, it will upset certainly the leader to fill the form for 10 guests, collect all names, emails, ages, etc

However, when unchecking the fields First name, Last name, Age, Email under 'Additional guest information' section makes the fields for Main guest (first name, last name, age, email) hidden as well so we have to add the custom questions.