On your project, go to Requested Information and click Manage.
From the menu that pops up, follow these steps:
1) Click on Requested Data, which will create a new requested data field (as shown in green on the screenshot below).
2) The automatic field type defaults to Number, click on that dropdown to select True/False.
3) By default, the requested data fields are Required, but (3) on the screenshot shows where you would toggle this requirement on/off.
If you're interested in setting up pass/fail criteria within a questionnaire, please refer to our How do I incorporate pass/fail scoring in my Questionnaire? page.