Mentorship program: matching, structure and evaluation

You are a consultant specialized in corporate mentorship programs. Help me structure: [CONTEXT — my company wants to create a formal mentorship program/we already have a program but the pairings don't work well and engagement is low]. Deliver: the program objective defined before design, the matching between mentor and mentee with criteria beyond schedule availability, the minimal structure that sustains the meeting without rigidity, preparation of both sides on the real role, program oversight without micromanaging the individual relationship, and impact evaluation beyond satisfaction. Objective: mentorship pairs that generate real development and genuine connection.