Hi @afgarcia86
There is a guide in the docs that will show you how to create a new custom field and register it to your website.
You can easily copy and paste 99% of the user field code into your own field.
Without knowing how your user is attached to a ‘company’, I can’t offer any advice on your question other than use the connection to find the company and add that to the create_field $choices
Cheers
E
