Activity completion
Activity completion allows the teacher to set completion criteria in a specific activity's settings. A check (tick) 
appears against the activity when the student meets this criterion. The criterion might be viewing, receiving a certain score or a student marking it as complete.
Changing activity completion settings in bulk
Within a course, the default settings for activity completion may be changed and several activities may have their completion settings updated at once, from the tabs in the Course completion screen:
Default activity completion allows you to select one or more course activities or resources and change their default settings (usually 'manual') to a setting of your choice. For example, if you always want your quizzes to be completed with a specific passing grade, you can specify this here. If you always want assignments to be completed when submitted, you can specify this here. Note that the altered settings only apply to items added after the change, not to existing items on the course page.
Bulk edit activity completion allows you to change the completion requirements of one or several existing activities in one step. For example, if you have four quizzes with manual activity completion, you can bulk edit them so that all four require a grade to be marked complete.
