Verifying structure design > Modifying process plan data
Edit activity start times and durations in the Operation Activities tab
Procedure
Expand the process hierarchy in the Process pane and select an operation.
Choose Open with→ Activities.
Double-click a Start or Duration value. The value becomes editable.Note The Calculated Start and Calculated Duration values cannot be changed.
Type a new value.
Click outside of the entry box to exit edit mode.The root activity's Duration is automatically recalculated using the new values.
Source: https://docs.sw.siemens.com/en-US/doc/282219420/PL20251212545240207.pmphelp/pmpa0720 · retrieved 2026-07-11