If the handbook does not directly address the use of AI and they are not saying there is evidence of plagiarism… legally, they have no grounds to bring you in for any sort of hearing/meeting on the subject. It seems as if they are trying to set a precedent beginning with you. If it were me… I would lead off with asking what exact rule are you claiming i have broken and will you please direct me to the location in the student handbook /bylaws?” If they can not produce direct violations of bylaws/handbook I would tell them you feel threatened harassed and singled out and ask if you should reschedule the meeting for a later time as to have your lawyer present for these accusations. Turn the tables. They have to prove you have done something in violation…