USP Pro makes it easy to create custom forms to register visitors. See how it’s done in this mini tutorial.
To turn any form into a registration form, make sure it includes Name and Email fields, and then add the following code:
<input name="usp-is-register" value="1" type="hidden" />
This is a hidden field that will not be seen by visitors. Other hidden fields may be added to turn any form into a contact form, post-submit form, and even combo forms that perform multiple tasks. Learn more »
Pro Tip: use the custom user attributes when registering users to collect additional information.