Can I modify the punch-in settings after the punch-in starts? 中文 The following describes three types of punch-in modes: calendar punch-in, assignment punch-in, and challenge punch-in: 1. For calendar punch-in, after the punch-in starts, all settings except the start date and participation conditions can be modified. 2. For assignment punch-in, all settings except the participation conditions can be modified. 3. For challenge punch-in, all settings except the start time can be modified. It should be noted that the valid participation period for students can only be extended, not shortened.