While adding a new membership you may notice that some options are missing in the "How do people obtain this membership?" section.
If the "Allow auto-renewal for memberships" option is marked when creating a new membership Altru only displays the Dues based option in the How do people obtain this membership? section. The auto-renewal feature can only be used with Annual Dues based memberships. If you wish to create a different type of membership program you would need to remove the "Allow auto-renewal for memberships" option.