A wizard is a type of modal that includes multiple steps that each have they're own screen. Users navigated between pages with "back" and "next" buttons at the bottom of the modal.
To guide a user through a process
Either a popup or full screen modal, usually centered on the page
- It helps to give the user some idea of how long the process is (how many steps) and where they currently are in that process.
- Consider whether you want the user to be able to skip a step or abandon the process and how that will affect their experience.