# Schedule editing, calendars, and PDF

> Edit durations, dates, and logic right in the Gantt, see every activity's predecessors and successors, give activities their own work calendars, and print the schedule to PDF.

Source: https://docs.specset.com/changelog/2026-10-09-schedule-editing-calendars-pdf · Published: 2026-10-09

**Edit the schedule where you see it.** Duration, remaining duration, start, finish, % complete, actual dates, calendar, and logic are all editable cells in the Gantt grid, and the network reschedules as you type. Drag a bar to move it, drag its end to change the finish, or drag the dot on a bar onto another activity to link them. Predecessors and successors take shorthand like `A1010, A1020 SS+2d`. Undo any change with the toolbar button or ⌘Z / Ctrl+Z, and pinch or Ctrl+scroll to zoom the timeline smoothly.

**See the logic behind every activity.** Select an activity to list its predecessors and successors in the side panel, with driving links marked and relationship types and lags editable in place. Its links are highlighted on the Gantt, and **Trace logic** narrows the view to its chain of predecessors or successors, by depth or driving links only.

**Calendars.** Each schedule has named work calendars with their own work week, holidays and shutdowns, and make-up days, and any activity can run on its own, such as a seven-day calendar for concrete cure. Durations, lags, and float count workdays on each activity's calendar, and work in progress is scheduled from its remaining duration as of the data date, the way Primavera P6 does it. P6 and Microsoft Project imports and exports carry every calendar.

![The Calendars dialog with a Standard and a Seven-day calendar, the Standard work week, and a holiday](https://docs.specset.com/images/changelog/2026-10-09-schedule-editing-calendars-pdf/calendars.png)

**Print to PDF.** Print the Gantt as a vector PDF, 11×17 landscape by default. Choose the paper and orientation, columns, timescale, and date range; print the whole schedule, the current view, or critical activities only; and include baseline bars, relationship lines, and the critical path.

![The Print to PDF dialog with paper, include, column, and timescale options](https://docs.specset.com/images/changelog/2026-10-09-schedule-editing-calendars-pdf/print.png)

See [Scheduling](https://docs.specset.com/docs/scheduling) for the full guide. Scheduling is in beta; reach out to your account team for access.