The Application for Church Membership: Form ACM-5 measures 6" x 4" and contains space for name, address, reason for application and other pertinent information. Do you want new ways to welcome members into your church?Check out these top church membership welcome letter templates and best practices. Church Membership Letter Templates - Membership Transfer Letter, business meetings, etc. We are writing this letter to you to determine your intentions regarding your membership status here at (NAME OF CHURCH).