For structuring your project plan you need to add task-dependencies, as predecessors or successor.
This article shows you how to do this quickly in LYNX.
You can also download the Task Dependencies manual at the bottom of this article which summarises this article in a short visual overview.
Add Task Dependencies
Task dependencies determine the relationships between tasks and identify which tasks need to be completed in order for other tasks to be performed. There are different ways to add dependencies between tasks in LYNX.
Add dependencies via the task grid
Add dependencies via the Gantt Chart
Note: The dependency is added in the direction of first select tasks to second
Add dependencies via the Edit Boxes
This method is especially useful for projects with many tasks
Delete Task Dependencies
Add/Update Task Dependencies
Select view → select data entry view (Alt+F6) → you now have a visual of the number of predecessors and successors per task.