Selecting Line Segments 
Use
You can change the planning segment and visualization segments defined in the line hierarchy from the planning table.
Prerequisites
You can only define line segments as the planning segment or visualization segments if a sort buffer exists between the line segments.
Features
The following example clarifies which line segments you can select to be the planning segment or the visualization segments:
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In the standard system, the header of the line hierarchy (that is, the work center created for the production line) is set as the planning and visualization segment.
In this example, you can define segment 1 as the planning segment, for example. Then the system uses segment 1 for scheduling and displays segment 1 in the lower section of the screen at the material data instead of the production line.
You also define segments 1 and 4 as visualization segments. These line segments are displayed in the planning table in the upper section of the screen and in the sequence schedule.
For more information, see: