How to add Types to the applicant quick form

Navigate to More → Application & Profile Builder

Find the "Add User" type builder for Candidate and click on the pencil icon to open the Edit Dialogue  

• Add a new field and set the field type to "Multi-Select"
• Check the box "is Multiple" if you would like have the option to select multiple types for an application.
• Set the Model to "types" and click Save.

You should now have a Types added to the applicant quick form.