Thanks for your faithfulness to teaching, to the Rotation Model, and to our site!
Answer: To give several teachers access to Supporting Member resources, you will need to give them access to your log-in info.
We don't have the capability of "tiering" supporting memberships, or adding different registered members to one supporting membership. So what we've always told people is to SHARE your log-in info with teachers in your church. Many churches do just that. You can edit your Profile, email log-in and password if needed at https://www.rotation.org/member-cp/update-profile.
Another option some long-timers like you have chosen is to create a profile/login for their church and let the church pay for the supporting membership on that profile. Then, keep your own log-in separate and simply make your personal Profile -a free "registered" or supporting membership.