How to create custom list forms with SharePoint Framework

Hello, thank you for sharing knowledge.
One question: Is it possible to open form in side panel, like native form do?
Thank you.

I can't get lookup columns to save from a new form?

Hi Thank you for the nice guidelines. Can you please tell me if it's possible to pass the parameter to the new form so that only a specific section of the form should be visible based on the passed parameter? I am of course taking this with reference to the form get developed using SPFx. Thanks in advance.