If you are allowed to use a calculator during in-person examinations, you must ensure that your device meets HEC Montréal standards. You may purchase a calculator from the HEC Montréal Coop, with a sticker attesting to its compliance, or obtain a sticker from the Zone Info at the Office of the Registrar if you have one of the accepted models.
From now on, you can go to the library's service desk to request it.