Yanfly ClassChangeCore and SubClass plugin problems

OK I am not sure I am understanding how to use these plug ins properly.

I'm trying to implement a system where a character has a race that cannot be changed, which then influences what jobs they can take, and then that job then affects the next tier of jobs they can take.

I figured out who to restrict race changes as races are the primary class and can't be changed (by use of <cannot change class>).

What I don't know is what command (or commands) do I have to use to prevent this:



The image above shows Hirohito having race of Aurapath, but with sub-classing, he can take a second race. I do not want this! Yet I need to be able to change his subclass to the sub-classes (jobs) I will have and those jobs into the next tier jobs and so forth.

Help me understand these plugins better.

The subclass works like this.
From a list of classes in database you choose a class as your subclass that will give a predefined set of stats. If you want particular classes to be ineligible to be subclasses, there are notetags for this as it's shown in Yanfly's video. So simply you can set all these classes as Main classes only and they won't be showing up in the subclass window.

They still show as options, even though now they are denied use for subclass, same for learning skills in the skill learning plugin. What notetag is for hiding the options in each listing too?

Never mind finally found the tags I needed. Yanfly need to explain stuff better honestly.

Seems class change core tags can be used on sub classes, and this is not made totally clear.

Yet can I make a required set of races for one subclass? Or is that not possible?