A Team Captain can login to their EventDog participant account and mange their team. HERE is a link to Participant Login.
Here the captain can edit the team name, change the team invitation status and invite team members to join.
Understanding Team Invite Status
A Team Captain can set the team invite status as follows:
NOTE: People who share email addresses will not be able to register using the same email as the invitation will fail once an email has been used to register.