A precedence diagram is a visual representation of a project's schedule that clearly shows which events, activities, and tasks are dependent on one another to begin or conclude. Critical tasks, noncritical tasks, and leisure time are depicted in the precedence diagram. It establishes the project's chronological and logical order of activity. It shows the critical route and, as a result, the actions that could jeopardize the project's scheduled completion. It represents possible scheduling buffers or reserves. The sequence of the following precedence diagram scheduled tasks that influence the duration of a project is shown in critical path analysis. A critical path analysis determines which tasks must be completed to fulfill the project's deadline. Divide your Work Breakdown Structure (WBS) into degrees of activities. Make a table with all of the activities and their sequencing. To each activity in the table, add linkages and dependencies.