Instructions can be found HERE

In a six years study of General Medicine you should gain: 18 credits from eligible subjects = it means 1or 2 subjects per whole year which will have 3 credits.

For Dentistry in 5 years: 15 credits

You could take as maximum 3 eligible subjects per semester.

Remember that some of the subjects are popular and has limited capacity so you should do the registration as soon as possible.