Go to "Team & Analytics" section on a relevant skill matrix. 
Option #1: Members list

Go to "Members" tab and see all participants. 
You can filter the list by choosing "Positions". 
Option #2: A specific position

On the relevant skill matrix, go to the "Career Poths" tab. 
Click on the position and find the list of employees. 
Tap to position. Click to "Assigned users" and here you'll see all members on the position.