What's the best way to group customers in a company.
Customer/user can work the same company, and it might be usefull to store this information in the shop for admin purposes or for giving discounts using rules.

Example:
- user X
- user y

both belong to company Z

Via a Rule I want to give company Z a general discount.

How do I best group these users in companies?

I was thinking to use roles but this will clutter the user profile page + you cannot add extra settings to Roles.