Create Task dependencies from pitching the Task list or Timeline (Gantt chart). If a Dependent Task is set to start before its prerequisite is finished, the tool will make you aware of the error with a highlighted red dependency line. It’s a simple precaution that can save you a lot of trouble down the line. Tasks with uncompleted prerequisites are shown slightly opaque on the Timeline. You also have the option to prevent any time being tracked on these tasks until they’ve been activated.