This option allows you to specify how the system should handle those cases where employees have both overtime and short time. 'Standard' means it is the same setting as applicable to the company. Look here for further details.
Credit worker with time programme hours as NORMAL TIME
The system looks at this setting to see how the employees in this specific group should be compensated on public holidays. 'Standard' means it is the same setting as applicable to the company. Look here for further details.