The control file is main.tex. Edit the title and authors in main.tex. Then either edit body.tex directly or edit components (e.g., abstract.tex, etc.) and include via \input{file.tex}.
This file contains basic information about styles used in the journal and provides an example of how the finished product will appear.
See main.pdf
main.tex
│- abstract.tex
│- body.tex
│- refs.bib
│- bio.tex