It is important to establish this early on when a group is beginning. How we treat the Scripture that we learn is also important. Room needs to be left for variation in interpretation and application of Scripture. However a group that does not agree that the Bible is the Word of God will not prosper. Members of the group need to have open hearts and minds when they study God's word.
Scripture holds a place of importance in our lives.
When we study, we need to look for application and conviction personally and as a group. Allow the group and it's members to be changed by what they learn. The movement of individuals and couples into and out of a group is normal. Several things can cause this to happen. Obviously the group will not always do the same things, or study the same topic forever.