To create a Person question type:

Select Person from the Question Type menu

Enter your question text

Select Person Or Organisation & Person

Person will show the user one menu all of users on your account

Organisation & Person will show the user two menus - Organisations and Users

Select your preferred Attributes

If you would like to, enable Enter Name Manually. This will create a box where the user can type in a name, rather than selecting from a menu.

Click on Preview to review your question

Click on Save to save and create your question