Verifying structure design > Modifying process plan data
Managing activity times with the Activities Gantt view
The Activities Gantt view displays activities and the chronological relation between them in a chart. An activities Gantt chart is a bar chart that illustrates the work breakdown structure of an operation. It illustrates the start and finish times using a timeline. The Gantt chart also shows the dependency (sequence) relationships between the activities.
Using the Activities Gantt view, you can:
Change the duration of elements.
Populate the duration time based on leaf elements.
Show and hide the critical path.
Zoom in and out of the chart.
Note the following about the Activities Gantt view:
The length of an element in the Gantt chart represents the duration of an activity. You can also set the duration in the Activities view.
You cannot set start times manually in the Activities Gantt view.
To help you avoid making inadvertent changes to activity durations, the Activities Gantt view is locked in edit mode when you first open it. You must unlock this mode by clicking before you can modify duration times by dragging the time bar.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.pmphelp/id1387038 · retrieved 2026-07-11