Sorry for being thick, but I'm not seeing it. This is a G-suite account (though I'm the only user / admin) so maybe it's different.
https://myaccount.google.com/signinoptions/two-step-verifica...
I appreciate your help, though!
[0] https://support.google.com/mail/forum/AAAAK7un8RUP1RC23nwRZ4
[1] https://support.google.com/mail/forum/AAAAK7un8RUZvZQQfsawrE
Dashboard -> select Security -> Basic Settings -> Two-Step Verification setting