I really don't know how to edit the style.
I was following this post Guidelines for customizing biblatex styles which has the concerns that I have but got stock in its answer in the
I recommend to use the configuration file biblatex.cfg. This file, if available, is read by biblatex immediately after a style has been loaded. The (empty) original is located at /tex/latex/biblatex in your TeX distribution directory; put a copy in the analogous location of your local TEXMF tree (and update your file database) and fill it with the redefinitions I'm (finally!) going to talk about.
part. Ideally, or what was I doing so far was just adding a predefined style from the Overleaf Bib styles page but it doesn't have the style I am required to have. The closest are the
chem-angew styles. Can they be modified somehow?
What I'd like is
[#] Initial letter of the name(s) followed by their 1 or 2 last names, "title of the paper", magazine, vol., no., (year) page-page
[#] Initial letter of the name(s) followed by their 1 or 2 last names, name of the book, edition, publisher, (year).
And when citing the [#] appearing.