To enrol for a minor 

Here, the rules of enrolment and deadlines of the courses are applicable.

To enrol for minor subjects and electives 

As a Utrecht University student you can enrol for a minor and/or electives through Osiris Student during the enrolment period. You must also enrol for each separate course of the minor in question via Osiris Student as well.

Content related information like which courses are offered in which period, etc. can be found in the Course Catalogue.