项目管理→项目跟踪→我未完成的任务→选择对应项目

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单击右键→点击项目任务树

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在弹窗中选择对应的任务→单击右键→增补子任务

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选择对应的任务→确定

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下一步

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下一步

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完成

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即可完成子任务的添加

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