1. Create a new overall task, do not enter the start time and completion time at this time
2, the overall task decomposition, for the overall new sub-task, do not enter the start time and completion time
3, the module task decomposition, for the module task new sub-task, do not enter the start time and completion time
4, to the breakdown of the task entry start time, completion time, priority, expected work, the owner and the tracker, the time of the parent task is not modifiable, Redmine will automatically calculate the start time and completion time of their parent task, so on the Gantt Chart can see the overall task completion time, The start and finish times of each parent task are determined by their subtasks
5, the actual implementation, the daily update of task completion percentage and registration work, so on the Gantt Chart can see the progress of the module task and overall task progress, to facilitate timely adjustment and management
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