Once a work orders has been created there are two "outputs" from the works order:
MRP: All the parts that are required to complete all works orders.
OPERATIONS: All operations required to complete works orders.
The scheduling tools for works orders create the schedule for production operations against available capacity. The scheduling tools you have access to will depend on the product you are subscribed to:
CORE: Weekly Scheduling
ADVANCED: Daily Scheduling
PRO: Hourly scheduling (still in development).