They must be resolved by the Academic Dean. You should look carefully at the start of the semester to see if you have potential conflicts and get them resolved now. Assignments and their due dates are indicated on the course syllabus. Unless announced otherwise, all assignments are to be turned in to the instructor at the start of the class period of the date due. In cases of emergency, have someone else turn in your assignment for you or contact the instructor prior to the class to make other arrangements.
Late papers receive a grade of zero.
However, the lowest assignment grade will be discarded. Do not wait until the last minute to do these assignments. The computer you planned to use at 10 p.m. on the night before the assignment is due might not be working or be otherwise unavailable. Not all exercises in the text books have been assigned. However, you should go over all of them for your own edification and advancement.