A recent project is being submitted to Elsevier's KBS journal. Latx templates in both single and double column formats are available on the website for download:

https://www.ctan.org/tex-archive/macros/latex/contrib/els-cas-templates

For the convenience of many people to modify, I choose to use the elsevier cas-dc-template provided in overleaf to write my paper. The content of the template is complex, and the official documents are provided for reference.

https://support.stmdocs.in/wiki/index.php?title=Elsarticle_-CAS#Elsarticle-_CAS

Document Records:

The latex class determines that the cas-dc selected here is a double column

\documentclass[a4paper,fleqn]{cas-dc}

Title section:

The title section includes author information abstract keyword, \titile identifier start maketitle identifier end

\title[mode = title]{Leveraging social media news to predict stock index movement using RNN-boost}
...
...
\maketitle

Title section simply uses mode=title to add a paper title

\title command have the below options:
The mode l parameters include:

1. title: Document title
2. alt: Alternate title
3. sub: Sub title
4. trans: Translated title
5. transsub: Translated sub title

\title[mode=title]{This is a title}
\title[mode=alt]{This is a alternate title}
\title[mode=sub]{This is a sub title}
\title[mode=trans]{This is a translated title}
\title[mode=transsub]{This is a translated sub title}

In the title section, you can add some mark ers, such as Marks in the title will be denoted by a star ()

\tnotemark[1]

\tnotetext[1]{This document is the results of the research
  project funded by the National Science Foundation.}

Author section:

The numbers in the list that follows \author correspond to the addresses that follow, for example, [1,3]. option after the name feels like you don't have to write it, because most journals aren't that sophisticated, and the address of the author corresponds to the author's mailbox.

\author[1,3]{Author Name}
[type=editor,    
auid=000,bioid=1,    
prefix=Sir,    
role=Researcher] # 

\author{corresponding name} # This will add a cormark to the correspondent author and annotate it at the bottom of the frontpage
\cormark[1]
\cortext[cor1]{Corresponding author}
\ead{abcd@163.com} # The mailbox address corresponding to the name will be added at the bottom

You need to define some address numbers below that correspond to each other

\address{University of Electronic Science and Technology of China}
\address[2]{Sayahna Foundation, Jagathy, Trivandrum 695014, India}
\address[3]{STM Document Engineering Pvt Ltd., Mepukada,   Malayinkil, Trivandrum 695571, India}

Code examples with screenshots:

\author{ABCD}[type=editor, # First Author's Information
                        auid=000,bioid=1,
                        style=chinese,
                        % prefix=Sir,
                        role=Researcher]
                        % orcid=0000-0001-7511-2910]
% \cormark[1] # corresponding author mark
% \fnmark[1] # This is footnote mark and should not be used first
\ead{abcd@163.com} % E-mail address
\credit{Conceptualization of this study, Methodology, Software} % Individual contributions, summarized at the end of the paper
\address{University of Electronic Science and Technology of China} % First Address

\author[2]{ABCD}[% Second Author
%   role=Co-ordinator,
%   suffix=Jr,
\credit{Data curation, Writing - Original draft preparation}
\address[2]{Sayahna Foundation, Jagathy, Trivandrum 695014, India}

\author{C}
\cormark[1]
% \fnmark[1,3]
\ead{rishi@stmdocs.in}
\ead[URL]{www.stmdocs.in}
\cortext[cor1]{Corresponding author}
% \cortext[cor2]{Principal corresponding author}
% \fntext[fn1]{This is the first author footnote. but is common to third
%   author as well.}

Show specific content:

Summary & Keyword

\begin{abstract}
This template helps you to create a properly formatted \LaTeX\ manuscript.

\noindent\texttt{\textbackslash begin{abstract}} \dots 
\texttt{\textbackslash end{abstract}} and
\verb+\begin{keyword}+ \verb+...+ \verb+\end{keyword}+ 
which contain the abstract and keywords respectively. 
\noindent Each keyword shall be separated by a \verb+\sep+ command.
\end{abstract}
% Summary notes need to be added \notindent Remove leading spaces

% utilize\sep Wrap
\begin{keywords}
Time-series Fault Diagnosis \sep
LSTM \sep
Deep metric Learning \sep
Imbalanced classification
\end{keywords}

Body part:

The content of the body part is actually the same as that of most latex documents, which can be written using common grammar

Summary section:

natbib libraries are currently used for document ref management. After importing libraries, bibtex formats of indexed refs are unified and uploaded into overleaf for reference.

\usepackage[numbers]{natbib}

I use a combination like zotero + google to manage my literature, and bibtex makes it possible to refer to other articles. The format is as follows

@ARTICLE{a2010,
  author  = {abcd},
  title   = {a},
  journal = {a.}, 
  volume  = {a},
  year    = {2010},
  pages   = {75-174}

The problem to be solved:

Using the natbib library for bibliographic indexing, the papers are sorted by the author's initials, resulting in a very confusing number of references in the article, which will be supplemented if improvements are found later

A simple summary:

Although I have used latex to write articles before, it is the first time I have touched the template of elsevier. This is just a simple record. The template needs to be adapted mainly to the front page part, but there are not many places to pay attention to in the body part.
If you encounter problems, you should refer to the official documents at the beginning of the article.