One mentor and two mentees

A variation on triads with a larger number of mentees

A structured event that brings mentors and mentees face-to-face for brief discussions. At a set time signal, each mentee moves on to speak to a different mentor.

Those who have recently experiences something new (e.g. obtaining a P. Eng. license) help peers who are just starting.

Online discussions between mentors and mentees. May be supplemented with face-to-face interactions.