There are multiple types of questions from multiple choice and short anser to requiring a file upload. Each question can be created to fit your need.
Each questions can be desiganted as optional or required. Completing the required questions will allow the user to access the rest of the app and your service opportunities.
You can even track volunteer information as an admin by creating admin-only qeustions that allow you to store important infomratio about your volunteers directly in Helper Helper.