# Setting dependencies between tasks

You indicate that one task depends on another by dragging in the Gantt diagram or using Add Predecessor in the task panel. There are four dependency types and working-day delays.

- Project manager

- Project Member

## By dragging in the diagram

- Hover over the predecessor task's bar; a small dot will appear at its right end.

- Hold the dot and drag it to the successor task's bar, then release.

## From the task panel

- Open the successor task's panel.

- In the Dependencies section, click Add Predecessor, or if the section is missing, click Dependency in the right column 1.

- Select the predecessor task, link type, and if necessary, Lag value (working days; a negative value starts before the predecessor finishes), then click Link.

## Dependency types

- Starts After Finish: successor starts when predecessor finishes (most commonly used).

- Starts Together: successor can start when predecessor starts.

- Ends Together: successor cannot finish before predecessor finishes.

- Ends When Starts: successor cannot finish before predecessor starts.

> Warning: Links that would create a cycle are not accepted (e.g., A→B→A); the warning 'This dependency creates a cycle.' will appear.

> Tip: Negative lag allows the successor to start before the predecessor finishes. Clicking an arrow in the diagram opens the link information and Remove Link button.

## Changing a dependency and bringing tasks closer

- Click the arrow between two cards on the Gantt chart; use the top banner to change the dependency type (Finish-to-Start, Start-to-Start, Finish-to-Finish, Start-to-Finish) and lag (working days).

- If you drag a card before its predecessor, the dependency pushes it back and displays a notification explaining why. If two tasks must run simultaneously, set the dependency to 'Start-to-Start' or make the lag negative (e.g., -2: starts 2 working days before the predecessor finishes).

- Weekends are not working days: a task finishing on Friday will have its successor start on Monday; the grey columns between bars represent weekends.

## Related pages

- How auto-scroll works

- Critical path and slack