我在新建project时，最小的任务时间单位是1天，能否按照0.5天或者1小时的时间单位去设置任务呢？
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Translation (thank you, Google Translate!):
When I create a new project, the minimum task time unit is 1 day. Can I set the task according to the time unit of 0.5 days or 1 hour?
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so, the answer is？Can users set time span?