Add "role selection" in WordPress custom registration form?

Question

Web development

Created its own registration form in WP. Tell me how to add a role selection (user type) when registering in a custom form? How to implement it? Or where to dig?
link to registration code.

Answer 1

Get a list of all roles available for work:
https://codex.wordpress.org/Function_Reference/get...
User roles are accessed via WP_User:
https://developer.wordpress.org/reference/classes/...