U066 – What does "not submitted yet" mean?
The text Not yet submitted appears next to a student's name if there is at least one submission for this student within the course, class and schoolyear context you're viewing, for another widget than the one you're viewing.
The information in the Review tab of your BookWidgets account is based exclusively on submitted student answers.
If within the context of the course, class and schoolyear you are viewing, there is no submission from a given student, this student will be nowhere to be found. However, if they have submitted their answers for another widget than the one you're currently viewing, BookWidgets will recognize them and place them in the result list featuring the text Not yet submitted.
From the text Not yet submitted you can't derive, in any way, whether a student has started working in a certain widget yet.