Identifying ideal members is a multi-step process that often begins by examining the characteristics of potential group members. Characteristics to consider may include gender, presenting problem, personality style, level of insight, reasons for coming to group, willingness to participate, and interpersonal skills. For example, a therapy group for survivors of sexual assault might limit its membership to women who have been sexually assaulted.

Once group characteristics have been identified, the group leader determines how qualified clients will be selected and how the therapy group will be marketed. Will internal referrals be used, such as the leader’s own clients? Will other counselors, mental health professionals, and medical facilities be willing to promote the group? Will ads be placed on social websites? These are some of the factors that must be considered as part of the therapy group development process.