The Bookly Service Extras add-on allows customers to book extra items for selected services. After installation and setup of the add-on customers will see a new step “Extras” after the Service step in the Bookly form. It is possible to bind an unlimited number of extra items to each service. The extra item may increase the price and duration of a service. The extra item may have an image associated with it. It is also possible to define what information is displayed to customers at the Extras step of the Bookly form.