Transfer student filling out Common App

I am currently in the process of filling out the common application as a transfer student. Most of the application seems self-explanatory, but I do have some questions. First, when it gives me the option to list my courses I am taking at my college, it only gives me 10 courses as the max amount, whereas I am taking 12 courses in total (spring and fall semester). How will colleges see all the courses I am taking or have taken? Would that be through the transcript I send to them? Next, in the activities section, is it okay that I list activities I did in HS? I still have some activities I did during my first semester at college and I put them down, but the majority of my activities come from high school? Is this okay?

Thanks.