If you would like to have multiple admins log into your account, they can register for a TTR account by visiting /register-improve-email-reply-time/.
During the registration process they will be asked to either create a new company or join an existing company. They would choose to join an existing company and find the company you have already created.
They will request to join your existing company and you will receive a Join Request via email. Accept the Join Request to allow the new user to have access to your account as an admin.
You can also view Join Requests from your dashboard by going to Account Settings > Company > Click on “Join Requests”.