Gantt OnDemand utilise JIRA’s built-in features, such as links (“blocks” and “blocked by”), time estimates and sub-tasks to render gantt charts. The concept is simple: to ilustrate dependency between two issues (order in which tasks should be completed) you need to create a standard "block" or "blocked by" link between them. Width of an issue on the chart and color depends on provided time estimates and logged work.
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