PL courses in MY UC Application

Hello,
I applied to UCB, UCLA, UCSD, UCD, UCI, UCSB through the system of My UC Application.
I have an issue about the PL courses.
I actually have only one PL(Planned) course right now on My UC Application, and actually I would like to add two more classes for PL.
Am I be able to add those two classes?
I’m a little afraid of the case that would affect on my application because of the changes of the PL courses.
Would this affect on my application?

And if I can add those classes, should I use My UC Application?
And also, should I notify all the UCs that I applied about this changes?

Thank you.
Sorry for asking too many questions…

Well I think you should only be concerned if you are NOT taking a class you told the UCs you had planned, since you are taking additional classes, it shouldn’t hurt your application at all. You should try to contact UC and see if they can add those classes to your application since the transfer update window is closed. Are they major specific classes or just random classes?

They are just random classes to fill out 12 units.
I actually have 100 units after I finish this current quarter.
And I actually want to take some classes over than 12 units so that I can ensure my acceptance.
I orginally thought to take only one class (5 units),
But When I talked to the counselor, the counselor said that I should contact the UCs and ask them if it is okay to take only one class for the last quarter.