The OTPlanBasedonRootCustomer property controls whether to calculate the bill hour with the weighted pay and bill rates for employees that have worked on two different assignments for two customers (with one customer being the parent customer, and the other being a department for that customer - same root customer).
Admin Tools location:
Config Option > Supplier > EmployerSetting
None - If a employee accrues enough hours to enter OT across multiple assignments, no create OT Bill units will be generated.
Customer – If a employee accrues enough hours to enter OT across multiple assignments and these assignments are for the same Customer (same CustomerID or same department) then bill units will also be pushed to OT.
RootCustomer – If a employee accrues enough hours to enter OT across multiple assignments and these assignments are for different Customers but share the same Root Customer(same customer different department), OT units will be created for both Pay and Bill.