You can draw the following resource types on an OV-4 diagram: Organisation Type, Post Type, Role Type, Actual Organisation, and Actual Post.
The following image shows the OV-4 metamodel.
Organisation Type
A type of organization.
Post Type
A type of post (or job title).
Role Type
The role that someone plays in the organization. (See Actual Post description below for some more detail.) You should only draw Role Types underneath Post Types in the hierarchy.
Actual Organisation
An actual organization. Modeling Actual Organisations and their hierarchy and relationships enables you to identify architecture stakeholders, identify process owners, and illustrate current or future organization structures.
Actual Post
A person is appointed to an Actual Post. That person performs Roles; some (or all) that are normally associated with that Post and possibly other Roles normally associated with other Posts. The combination of Roles that a person performs is considered their Job. A Post and a Role both have Competencies. For example, the Product Manager and the Documentation Manager and a Developer may all have the Competency of posting software on the Support Center. They all perform the Role of Software Publisher.
Resource Interaction Line
Allows you to specify cross-hierarchical relationships between organizational resources.
