Co-applicants sign the lease and fill in their own details and documents. They'll be able to join in a coming update; for now, tell the agent about them. Occupants (children, dependants) don't apply.
Pets
No pets? Leave this empty.
Vehicles
Utility connection
Want a free connection service to set up electricity, gas and internet before you move in?
Required to submit. It's a yes/no question only; choosing No doesn't affect your application.
Emergency contact
Any email is fine here. Used only in an emergency about the property or you.