TRES creates a user for you and sends you an email invitation to connect to your account. The invitation looks something like this:
In the email message, click Accept Invitation.
A TRES login window is displayed.
Create a password by typing it in the relevant field.
Click Continue.
Your TRES account login screen should now be displayed in the web browser.
That's an indication that the account has been fully activated.
Log on to your account.
Welcome to TRES!