Hi Tien, According to this "https://support.workfront.com/hc/en-us/articles/216669668-Understanding-License-Types">overview , Requestor/Reviewers are essentially Read Only licenses, but in order to Check In or Check Out documents, a user must have manage access, according to "https://support.workfront.com/hc/en-us/articles/217045787-Checking-Out-Documents">this article . Accordingly, I think you'll need at least a Worker license to accomplish your goal. Regards, Doug Doug Den Hoed - AtAppStore Got Skills? Lend a hand!
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