so this is a university webpage, i have to select the classes that i want to take. the "green check" means those classes are available. Every roomclass has 40 spots.
I've heard that some people can get in even when they are no spots available. How could i be able to do that ? a friend of mine told me that the webpage doesnt have a lot of security and it was easy for someone who knows to get in.


Notes :
Cupo means like spots, disponibility

Llena: FULL(0 spots, no space)
teoria: Theorical class laboratorio: laboratory

BTW this is first time ive posted something on a forum