Retirement Plan Portfolio Manager provides investment advice on your retirement portfolio based on your goals and needs. For example, Federal, state, or local government plans and some church plans are not covered.Below are the investment options available in the Oakland County Retirement System. We have included documentation to answer various questions. Learn ways to save and invest to help you prepare for your retirement. Professional advice. All current Port employees are eligible to participate in the Plan and retirees may hold balances in the Plan. 56. All about your plan. Review your investment options and each fund prospectus. File Form 5500 to report information on the qualification of the plan, its financial condition, investments and the operations of the plan.