Whilst Program Coordinators help run the day-to-day of mentoring programs, Admins are more of a top level "birds-eye view".
Both an Admin and a Program Coordinator can make matches and see new recruits, but only the Program Coordinator will see the messages to the PC from end users and can send bulk messages to end users.
Each Program facilitates multiple Admins, but it can only support one Program Coordinator at a time. A Program Coordinator can be promoted to also be an Admin. Program Coordinators are not automatically Admins by default.
Only an Admin, or a Mentorloop employee, can change a program coordinator associated with a program.
An Admin can be a mentor/mentee, a Program Coordinator can not.