While setting up your summit, you would like to add a team member to your account.
Head to heysummit.com
Click on Account Dashboard
Head to Team
Click on + Add Team Member at the top right of the page
Add their email address in the empty field, then manage the relevant permissions for your team members, specify which events they should have access to and click Add Team Member.
They will be sent an invite to join which they will have to accept to be a part of the team.
To learn more about a team member's role, visit this article.