Planned Order Generation

BEAS MRP generates planned orders/order recommendations for a fixed period of time.  This fixed period may be shorter than the planning horizon.  Can the system generate planned orders for the entire planning horizon?  A planning horizon is defined as a dynamic period, based on the length of time independent requirements (forecast) are loaded. 

For example: Planning horizon may be 24 months, the system should create all the planned orders through this time period to ensure all the required materials would be available to support the demand/forecast.