The membership of CAS shall comprise the following categories:

Associate Member, Ordinary Member, Fellow, Honorary Member, Honorary Fellow and Institutional Member.
Honorary Members, Honorary Fellows and Institutional Members shall have no voting rights.
Application for all categories of membership shall be in writing to the Secretariat using the approved application form.
Each nomination shall be signed by two (2) persons who are either Ordinary members or Fellows of CAS in good financial standing and must be accompanied by a curriculum vita of the nominee

Nomination/Admission Forms for Membership of CAS Ordinary Members.
Note that Membership of CAS may be handled by the individual Chapters who have their own forms, so check with your local Chapter.