Can I create my own custom form for adding and editing an infoblock element in the Bitrix admin panel?

Question

1C-Bitrix

Received a request to create a custom form for adding an infoblock to Bitrix. This cannot be done through the settings, because it is necessary that when adding an infoblock element, its child elements are created, depending on the filled fields, which can be n in number.

I'm looking for manuals on creating a custom form for adding an infoblock element. I can't find anything useful anywhere, either on google or youtube. If anyone knows, has a manul, please share, if it's real at all.