If you’re working on an item that’s a Work-in-Progress you don’t have to have it where students can see it and potentially get confused or worried about the content. You can hide content so you can work on it or explore your options quietly! You can also restrict access to activities (and sections) to prevent students from accessing activities and/or resources until set parameters are met.
NOTE: Hidden activities will affect student grades unless they are set to 0 (zero) points or “No grade” or change your gradebook settings. Otherwise this can upset your view of accurate student grades!