[otrs] Company & Contact confusion

I am new to OTRS and trying to understand how I best setup my Customers within the system. We have many Customers (these are actual Companies / Firms and not persons). Each "Customer" can have more than one "Contact" (actual persons / individuals working within the Company). In OTRS I only find a "Customer" creation page refering to actual perons. 1. How do I setup actual Companies which can have Contacts persons associated? 2. How do I link Contact Persons to Companies? 3. Can I create a Company profile (with contact details such as address, main tel & fax...) and then link Contacts to this? ... have I mis-understood how OTRS should be implemented? Thanks for your clarification of these matters.