Having Communion in Groups goes back to the 1st Century (Acts 2:42-46). One could argue that communion is best practiced in a small group because it captures the essence of community through the opportunity of increased intimacy and authenticity. It's a great chance for you to share with your group what God is doing in your life as you examine your heart the week before taking communion. What is communion? Communion is worshiping our Heavenly Father by remembering Christ’s death and resurrection. It's reflecting on your relationship with Christ and examining your heart. It provides the opportunity to be honest with God by confessing and repenting of sin.
When should your group have communion? Communion can be done any time in the course of a group, but it might make sense to have it at the end or the beginning of a study. Or consider having communion around an important date for the group (one-year anniversary of the group, group multiplying, holidays, etc.)
Who is communion for? Communion is primarily for those who believe in Jesus Christ as their Lord and Savior—those who believe that Christ died for their sin and rose to bring them eternal life. However, Communion can also be a great opportunity to share Christ with those that don’t know him. It may even provide an opportunity to ask unbelievers how they would feel about trusting Christ.
Keep in mind that some of your group members may not be Christians. If they're uncomfortable with it, it's okay for them not to participate in communion. Be mindful of how to facilitate this tension, and clearly communicate in advance what's going to happen during communion. Stress that you'd still love for them to be there.
Considering different backgrounds: Communion is practiced differently depending on your church background, and most likely your group members are from different backgrounds as well. Have a general conversation with your group several weeks before you do communion to find out their different backgrounds and views. Ask what their thoughts are on communion and about their past experiences.
Do you have any other thoughts about how you've facilitated communion in your group?