# Predecessor and Successor

Source: [https://docs.virtosoftware.com/docs/virto-gantt-chart/using-virto-gantt-chart-app/actions-with-tasks-in-virto-gantt-chart-app/predecessor-and-successor/](https://docs.virtosoftware.com/docs/virto-gantt-chart/using-virto-gantt-chart-app/actions-with-tasks-in-virto-gantt-chart-app/predecessor-and-successor/)
Product: Virto Gantt Chart App
Updated: 2026-08-12


Virto Gantt Chart App for SharePoint Online supports successor/predecessor relations. Predecessor and successor tasks are connected by arrows on the chart. Successor starts after predecessor.

![Predecessor and successor tasks linked by arrows on the Virto Gantt Chart timeline](https://img-docs.virtosoftware.com/wp-content/uploads/2024/11/predecessor_and_successor_1.png)

If you add the predecessor to the task edit form, you can add predecessors right on the chart.

![Adding a predecessor directly on the chart by drawing a link between two tasks in Virto Gantt Chart](https://img-docs.virtosoftware.com/wp-content/uploads/2024/11/predecessor_and_successor_2.png)

***Note****: a classic Task list has a predecessor column of the lookup type. If you’re using custom SharePoint list,* *make sure you have added a predecessor column for proper work.*