How do I set up overtime that goes into only one cost center on an employee who has two hourly positions?

Question: An employee has two hourly positions, one in one cost center and one in another. Her Worker Position costing allocation is set up with a 70%-30% split between the two cost centers, each with the appropriate FDM string. It has been agreed that any overtime pay will be charged to the secondary department worktags. How should this be set up? 

Answer: Create a Worker Position Earning costing allocation so that all overtime earnings post to the secondary FDM string. On the Assign Costing Allocation screen, under the Worker Costing Section, make sure to choose the appropriate Earning type. In this example, the Earning type will likely be either Overtime – Regular Pay or Overtime – FLSA Premium.