User registration can be handled using self-registration. In order for a user to self-register they will need their account # and access key. These can be found in the admin CSP by going to Data -> Customers and viewing the customers account. In the example below the account # shows as DEMO and the access key is elastic.demo (these are case sensitive).
From the brands login page, there will be a link to register. Filling in these two fields will bring up a new form allowing the user to set their user information.
Initial Registration Form
User Information Form
Note: Not all brands use self-registration and the access keys can be changed/imported in during a customer import.