I think you can ask your tutor this question. If you tell the truth, you should agree. Only a tutor with a slightly longer personal leave has no right to approve. Maybe you should ask the department head for approval and then write a note. The validity period is when you are a volunteer. You can give it to your classmate who feels at ease and reliable, so that he will show your note to the teacher every time you call the roll in class, and there should be no problem of deducting credits for absenteeism. ...

You'd better ask your tutor or counselor carefully!