Can you add stuff to your "college app" after the deadline

I’m completing calc 3, discrete math, and linear algebra the second semester at my community college, I think this would be worth it for them to consider since I wanna major in mechanics or CS idk yet lol but my transcript per say won’t be finalized until early march (quarter system) so its before they make their final decision but after the deadline. How can I let them know? is it still possible or is everything concrete finalized by application date

(I plan on saying im taking theses courses on the add comments but I would like them to see what grade prob A I got.

Thanks!