You need to fill in the following dormitory application form: vpis-DD-prijavnica_za_sprejem.
Then send it to the address:
Dijaški dom Celje
Ljubljanska cesta 21,
3000 Celje, Slovenija
You will be informed about the enrolment.
Together with the dormitory application form, you need to enclose the certificate of enrolment that you get at the faculty. This document validates your status as a student.