I don't know if you need any videos, per se, unless I have misunderstood the question.
There is a style maker tab in BIAB under "File" (far left).
I have made hundred of personalized styles this way either starting from scratch or building on something I have found, such as making my own version of an existing Xtra style (or regular old style).
I like the Xtra styles paks as sources of inspiration and do not find them that expensive. They are "pre-mixed" if you will and the musical combinations seem smart.
On any given project I can quickly find one that works as a starting point, and then I will roll my own, by adding or swapping out RTS and coming up with my own flavor.
Again, I must have built 300 or more styles this way.
Is that what you are talking about, or something more complicated that would require a video?