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Child Task

Sometimes you need to define parent-child relations between tasks on the Gantt chart. If a Task listis chosen as a data source, you can add child tasks. If a task has at least one child task, it is displayed as a summary task.

Parent task displayed as a summary task with nested child tasks in the Virto Gantt Chart App

On the left part summary task appear with an arrow and ability to collapse the child tasks.

Summary task with a collapse arrow in the left pane of the Virto Gantt Chart App

To add a child task, click the summary task in the left part of the app and use “+ Child task” button. In this case SharePoint list data source must be also a task list.

Plus Child task button on a selected summary task in the Virto Gantt Chart App

Fill in the fields to add the child task.

New child task form with fields to fill in within the Virto Gantt Chart App

You also can change the position of summary tasks by using “Indent” and “Outdent” button. This way you can create complex strutures of tasks with multiple levels.

Indent and Outdent buttons used to build multi-level task structures in the Virto Gantt Chart App

Updated on August 12, 2026