nico80

Register Flow gives a simple solution to custom registration form needs. Rather than having you learn to use a new form designer, shortcodes are provided to turn your custom pages into registration steps. Action and filter hooks are then used to let plugin users tweak the registration process as needed. This is intentionally a developer focused solution to allow full control of the process.
The registration process has 3 steps:
<ul>
<li>Step 1 is where users could enter a username and validate there it is valid. You can implement custom validation to modify this step.</li>
<li>Step 2 would be the rest of the information (password, phone, etc). Once they complete this step an email will be sent enabling them to complete the process. You can implement custom validation here as well.</li>
<li>Confirmation step is called when the user clicks on the link in their email (up until that point they have not actually been created as a WordPress user). You can implement custom validation as well as custom logic to be run when the user has been created (good place to save some additional user data).</li>
</ul>
All these steps are controlled via custom pages, action hooks and filters – see the FAQ section for more details.

F1 Register Flow

Register Flow gives a simple solution to custom registration form needs.  Rather than having you learn to use a

F1 Register Flow vs RegistrationMagic – User Registration Forms Plugin