In NPSP, there is a clear distinction between how we track "people to people" and "people to organizations."

People to Organizations (Affiliations): When a Contact (the volunteer) has a professional or community connection to an organization (Universal Containers), the Affiliation object is used. An Affiliation is a junction record that links a Contact record to an Account record with an 'Organization' record type.

People to People (Relationships): The Relationship object is used exclusively for person-to-person ties (e.g., "Spouse," "Coworker," or "Father"). You do not use the Relationship object to link a person to a business.

The Solution:

To track this volunteer's employment or connection to Universal Containers:

Step 1: Create an Account record for "Universal Containers" and ensure its record type is "Organization."

Step 2: Create an Affiliation record.

Step 3: On the Affiliation record, link the volunteer's Contact record to the Universal Containers Account record.

Step 4: Specify the Role (e.g., Employee) and mark it as the Primary Affiliation if this is their main employer.

Using Leads (Options A & B) is incorrect because the volunteer is already an established "Contact" in the system; creating a Lead would create a duplicate record and fragment the data history.