As you will need an FU account and as you have to be enrolled in order to sign up for courses via Campus Management, you will miss the regular registration deadline for courses with a limited number of participants. However, you will still have a chance to get a place in courses with a limited number of participants, should there still be places left after the registration deadline, or should another student drop such a course. In order to find out if there are places available, please log into the system regularly. Those left-over places will be allocated according to the rule "first come, first served".
However, a late arrival will have no negative impact on your registration for courses without a limited number of participants. The registration deadline for those courses expires on the third Friday of the lecture period.