Music Guru's,

Very new to BIAB and understanding most of it. Sorry if this is obvious but I have looked to find the answer but no luck.
Is it possible to have more than 2 styles per song and if so how do you accomplish putting in more than 2 syles?

I know you can do ABCD but this only gives you 2 styles, and I want to do four syles to a song.
Thanks
Roger