This letter is to confirm that the above-named person completed ______ hours of community service on. Here is a sample letter that you would have them fill in with supervisor from the volunteer place.In order to get started you will need to fill out a Volunteer application with us. How do I fill this out? Complete your questionnaire online, you may also complete your Questionnaire using the telephone service at 1-866-648-4880. What information do I need to fill out? You will need the volunteer's name, title, your organization name, and contact information. If you've got letter head that always helps make things look official. Steps for getting SSL forms signed. ​. Opportunities for Seniors.