Modeling Tools 2026x UAF 1.3 modeling NAF 4.0 Logical viewpoint Lr Lines of Development Current: Manipulations in Lr Lines of Development. Lr Gantt chart Manipulations in Lr Lines of Development. Lr Gantt chart The following chapters describes the procedures about how to work with the Gantt chart: Adding Actual Project Milestones in Lr diagram Adding Actual Projects in Lr diagram Deleting Milestones from Lr diagram Deleting Projects from Lr diagram Edit Project Status in Lr diagram Relating Projects in Lr diagram Removing Project Status from Lr diagram ×