Insert your CRM USERNAME taking the username of the user you want to use as a portal user from your CRM instance (you should create new user in your CRM so you can better manage his privileges).
Insert your CRM API KEY taking it from the user profile page of the user you want to use as portal user from your CRM instance.
Press the Next button, if the connection from the portal and your crm will complete successfully then you'll be prompted to the step 2
Insert the administrator username you want to use to login in your portal configuration area
Insert the administrator password you want to use to login in your portal configuration area
Insert the administrator email you want to use to receive the portal notifications and reset your portal administator password
Press the Next button, then you'll be prompted to the step 3
Step 3 & 4
Accept our license, then click Finish to go to the step 4
Press the Configure Your Portal button, then you'll be redirected to the portal configuration areawhere you'll be able to start configure your portal (the first time you login you must activate your portal putting your license key and clicking the activate button)