The graphical planning table is a tool for capacity planning and scheduling that displays the operations and the work centers in a time-oriented view. You can use the graphical planning table to create, change, or dispatch operations manually or automatically. The planning direction determines whether the operations are scheduled from the start date or the finish date of the order. If the planning direction is forward, the operations are scheduled from the start date of the order1.
If you want to insert an operation at a certain time on a work center in the graphical planning table, and the planning direction is forward, and the desired dispatching time coincides with an operation that has previously been dispatched, the insertion takes place as follows:
The new operation is inserted at the desired time; the previously dispatched operation is moved backward (B): This is the correct answer. The system inserts the new operation at the specified time and shifts the previously dispatched operation to a later time, so that the sequence and the capacity requirements of the operations are maintained. The system also adjusts the start and finish dates of the order and the subsequent operations accordingly2.
The other options are not correct for the following reasons:
The new operation is inserted at the desired time; the previous dispatched operation is moved forward (A): This is not correct. The system does not move the previously dispatched operation to an earlier time, as this would violate the planning direction and the capacity constraints of the work center. The system only moves the previously dispatched operation to a later time, as explained in option B.
The previously dispatched operation stays as is; the new operation is inserted after the dispatched operation ©: This is not correct. The system does not insert the new operation after the previously dispatched operation, as this would not match the desired dispatching time specified by the user. The system inserts the new operation at the desired time and moves the previously dispatched operation backward, as explained in option B.
The previously dispatched operation stays as is; the new operation is inserted before the dispatched operation (D): This is not correct. The system does not insert the new operation before the previously dispatched operation, as this would violate the planning direction and the capacity constraints of the work center. The system inserts the new operation at the desired time and moves the previously dispatched operation backward, as explained in option B.
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