A team administrator is an individual whose email ID was used while placing the order, will get the activation email from Dropbox to activate their account. As the user activates the account from the email, becomes the Dropbox team administrator. You can add another team admin from the Customer Control Panel and as the new Admin access the Dropbox portal, you can remove the existing Admin User.
1) Log in to the Customer Control Panel and Click on the Dropbox from the Left side menu.
2) Scroll down and click on the ADD NEW MEMBER under the Users tab.
3) Provide the User details, check the box for Dropbox Services.
4) Scroll down and click on the NEXT.
5) On the next page, select the Team Admin option from the drop-down and click on the FINISH button.