Cannot find where to set roles in membership access levels

Hello Folks, I mam using Membership along with BuddyPress. I would like paying members to have "editor" status, and free account (not stranger), to have subscriber status. I read in the thread here that I should be able to find a setting in the membership access levels to assign roles. I do not find any such setting, and all my accounts are being created with "subscriber" status.

I read that this feature requires the "Users must be registered and logged in to comment " setting must be "true" ...it is, and still not seeing anyway to assign user roles upon signing up for / purchasing a membership.

Thank you in advance for you help.