Linkage means that objects are organized via the predecessor/successor relation to the networks.
The linkage between the objects is visualized by lines.
Customizing procedure
Data Areas
Object data area, e.g. task
Linkage data area, e.g. link
In this data area, include the Linkage DI which visualizes the link between the objects in the module mentioned above.
Since the linkage is used for linking bars (it is hence visible in the Gantt chart), set the Linkage DI to Window = 3 like the bar data fields, and set Filter criteria = .
Module
Subordinate the link data area to the object data area.