To register for this course of study, you need to go through the procedure online which includes (check out the TUTORIAL):
To know the deadlines by which you can enroll in UniGe consult the page Dates
If you are matriculating for the first time, you need to take an Assessment Test (AT) of English language to check your proficiency level.
Visit the CLAT Language Skills Development site to get all the necessary information, such as waivers, dates and how to take the test.
Read carefully which courses of study are exceptions.