No, you can’t. It is what’s called a ‘closed group’ with 10 committed men per group at any one time. If one member leaves the group, a new member will be invited in consultation with the other group members.
We keep the group closed because the relationships you form with other men in the group is a central part of the process. Sometimes the process is a deeply personal one with men sharing deep vulnerabilities - there is more intimacy and safety when it’s a closed group.