Set mandatory time to be spent on each unit?

There’s an option in CoursePress to set Timer for each unit and set a “Student Completion Time” which limits the time a student can take to pass the unit. Is there any way to add an option to set a “minimum” or “minimum – maximum” time *required* to be spent on each unit?

Ideally, an instructor could set to require a student to log in and out of each unit and spend a required amount of time in that unit before moving on to the next unit. Can it be added with some code snippet/mu-plugin?