Creating a Task
Virto Gantt Chart App for SharePoint Online / SharePoint 2013 allows users to create task right in the app. The same changes will be done in SharePoint list.
Clicking “+ Add task” button will open form for creating new task. First drop down list is used for selecting data source where user wants to add new task.
Type the title (“New task” by default) and define start and end time of your new task.
By default the new task will appear at the end of the list (or on the other position depending of chosen view). The task will appear in the Gantt Chart on the right as well.