On the Topic Manager page, click on the "+ new challenge" button.
Scroll down and click the Custom Form Challenge.
Sum up your multi-field questions in the "Challenge Title" field. E.G. "Feedback Survey", "Introduction Form".
If you'd like, you can give your players more information/context behind the challenge in the "Challenge Description" field. E.G. "Thank you for participating in our event. Please take a few minutes to fill out this feedback form.", "Thank you for expressing interest. Please fill out this form and we will get back to you within 24 hours."
Scroll down to set your first field. Select what kind of form you want.
Fill in your question in the "Field Title" field.
There is no limit to the number of fields you can have.
After you have created all your fields, scroll down and click 'save challenge'. Your Custom Form Challenge is now ready.