Important: This plugin is an add-on that requires the Bookly PRO installed and activated. View Bookly PRO page at Codecanyon. Bookly Custom Duration add-on enables your clients to decide for how long they want to book an appointment. Should they prefer a continued meeting with you or reserve a conference room beyond the default service duration – let them make the choice! Create services with flexible duration and your customers will be able to select the length of their booking at the first step. The price will be calculated accordingly.