The first requirement for a new safety organization is to define what it is intended to do. There is a difference between the safety needs of a church that meets only once or twice a week on Sunday, and one that has services multiple days a week, runs a school during the week, has an internal coffee shop, and offers daycare every day. This is why Intentional Church Safety by Bevan Collins is labeled as a practical guide. The scope of what is practical is dependent on the individual church.
Getting started on this path is sometimes the hardest part. A dedicated group from the congregation should be gathered to look at these ideas and then develop the framework of what a safety organization should look like. This may be a few people, or organized teams led by members and staffed by either members or hired professionals.
The focus must be on what is practical and reliable for your church and membership.