Whether you are adding a contact for an organization, or an employer for a person, the relationship is the same and both directions of the relationship are created. The only difference is whether you are creating the relationship from the person or organization's perspective, meaning with the person or organization as the relationship subject.
You can enter an existing or new person as the contact, or organization as the employer. If you enter a new entity, you create not only the contact relationship but also the new person or organization.
The profile, address, and contact point information are all for the contact, not the person or organization itself. See: Introduction to Contacts.
With the address feature in Oracle Customer Online, you can add more addresses for this contact, and select the primary address for each purpose. See: Addresses.
You can optionally create the relationship and immediately add more details, such as the purposes of this new contact relationship. See: Profile.
Note: The new relationship has a start date of today, and no end date. To end the relationship, just remove the contact or employer.
You can also create a contact relationship as part of creating a new person. See: Creating Organizations or Persons.