Suboperations are not divided into individual operation segments. Instead, they are assigned a start and a finish date calculated with reference to a specific reference date in the corresponding operation

To define the start and finish of a suboperation, you must go to the operation tab page Suboperation dates.

The following data is required to calculate dates for a suboperation:

• A reference date (for example, the start date for setup or the finish date for the execution of the respective operation)

• A time interval:

• If the time interval is positive, the system schedules forwards starting from the reference date.
• If the time interval is negative, the system schedules backwards starting from the reference date.