I am all confused about the styles, custom and panel memory, A,B,C, and the following banks, composer. With the banks there is also 8 different buttons circular(panel memory?)

I know for each style there are multiple files with different extensions.

So how do all these work together and the differences among them i guess.

I know the custom Memory holds up to 20 styles that I can use. If I want to use a style that has 5 files , same name different extensions, is 1 of the custome memory the best place to saved it to?

trying to understand the workings of KN7000 series..