Design Membership Application Forms for a Church Group Using a Free Download Sample. A church membership form is a document that contains a record of church members and their information.1. Fill out the Membership Application. The application is available in two formats below. This church membership form sample template is for church administrations, groups, or religious associations to enroll new members to the church. They can be edited to reflect your specific needs. Edit, sign, and share church membership information online. No need to install software, just go to DocHub, and sign up instantly and for free. How do I fill this out? To fill out this application, gather all necessary information about your church and personal details.