One of the common term associated with EPS in P6 is Organization Breakdown Structure (OBS). An organizational breakdown structure (OBS) is a hierarchical arrangement of a project’s management structure. User access and privileges to nodes and projects within the enterprise project structure (EPS) are implemented via responsible managers, defined in an enterprise-wide OBS hierarchy.
An OBS is not the same as a resource pool. While resources are assigned to activities, OBS elements are associated with EPS nodes and projects. The OBS element corresponding to an EPS node is the project manager responsible for all work included in that branch of the hierarchy. In this way, an
OBS supports larger projects that involve several project managers with different areas of responsibility.
The organizational breakdown structure (OBS) is a global hierarchy that represents the managers responsible for the projects in your enterprise. The OBS usually reflects the management structure of your organization, from top-level personnel down through the various levels constituting your business. You can associate the responsible managers with their areas of the EPS — either nodes or individual projects. When you associate a responsible manager with an EPS node, any projects you
add to that branch of the EPS are assigned that manager element by default. The OBS hierarchy is also used to grant users specific access privileges to projects and the WBS levels within projects.
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| Fig 1: Chart View of Typical OBS in P6 |
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| Fig 2: Table View of Typical OBS in P6 |
Reference: P6 v6 Reference Manual.
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