This article explains how to create a form question that lets users upload files, including how to write the question text, add an optional description, and make the question required.
Selecting the file upload question type
In this type of question, the user will be able to upload files to respond to your form.
First, you must select the file upload type.

Editing the question text and description
Edit the question by typing in the "Your question here" input, and if you want, add a description by typing in the description input.

Making the question required
You can make this question required.

Conclusion
By following this guidance, you can set up a file upload question in your form, customize its prompt and optional description, and choose whether users must answer it.