Each student can choose his/her subjects. Depending on the number of teachers teaching this subject and the number of seats in the rooms Solstar 2001 creates the classes automatically. If you do not wish that Solstar 2001 creates the classes by automatic you also can do that manually.
On the top of the screen you can
define the general data of the class (e.g. number of seats).
On the bottom of the screen you can define which teacher will teach the class on which day and which lesson. But of course, you can also let Solstar 2001 do the work for you