This is possible only if you have purchased the ApplyNow feature. Once you make the purchase, the button is displayed and all potential tenants can use it for the duration of the listing.
This will allow you to ask some key questions about the tenant and get to know more about their history. This gives an opportunity to get quality tenants from all the applications you receive.
The form is the standard application form but it just online to save you time the hassle of managing all the paperwork.