Summary tasks - group of tasks and their start, end and duration is summary of its children, their changes affect also their children.Ĭalendars (holidays) - excluding any dates or date ranges from the Gantt chart. Start date - base start date of the whole project, no task should start before this date, all first tasks should start on this date.įinish date - finish date of the whole project, no task should end after this date, used to calculate critical path.ĭate constraints - early start, late start, mandatory start, early end, late end, mandatory end - maximal and minimal end and start date of the task.Ĭritical path - marks the tasks, that cannot move to future (be delayed) to not affect project finish date. It is possible to set dependency type (ss,sf,fs,ff), dependency lag (reserved time between dependency start and its end), and dependency float (maximal permitted time between dependency start+lag and its end) These dependencies can be automatically checked and corrected after any change in the Gantt. TreeGrid Gantt chart support various features for project management computations.ĭependencies between tasks.