As you start to customize Rock for your ministry, you'll want to define new group types to match your various ministry areas (small groups, ministry groups, etc.) TipOnce you realize the power of group types, you’ll be tempted to start creating many custom types to fit each of your ministries. Don't do it! Resist this temptation at first. Less is more. Look for common points within your many ministries. This will help you reduce the number of group types that you’ll need. In general, it’s easier to add new group types later than it is to merge group types in the future.