For the Team Captain or Co-Captain to see all members of their team, they would do the following:

1. The Team Captain or Co-Captain logs into their own Participant HQ
2. Click on the Reports tab at the top
3. Right below the Reports tab, select the Team Participant Report

For a Team Member:

1.  Go to main URL for event site
2.  On the right hand side, see Top Teams box
3.  Click "more" hyperlink
4.  Find your team and click on the team name
5.  This will open the team page and all members will be listed at the bottom