Bitrix - How to choose a user group during registration?

Question

1C-Bitrix

There are several user groups, where during registration you need to select one from the drop-down list

Answer 1

output and select, then process and save, what kind of questions are on the toaster, also "Medium" complexity

Answer 2

Create a user field type "list" USER object, then catch the selected value from the list in init.php in the "OnBeforeUserRegister" event before trying to register a new user
https://dev.1c-bitrix.ru/api_help/main/events/onbe. ..
depending on the value, place the user in one group or another.

Answer 3

If you are interested in API methods, here are some code examples blog.ivru.net/?id=29 registering via API with simultaneous assignment to the desired group. In the same place you will find how to get these groups using API methods. It remains to load the form and add what you need to the authorization script.