\documentclass[9pt]{AEGC2021}
% remove these for actual abstract, needed only to generate random text
\usepackage[english]{babel}
\usepackage{blindtext}
\usepackage{wrapfig}
\usepackage[labelfont=bf]{caption}
\pagestyle{main}
\begin{document}
\thispagestyle{ttlpage}
 \newgeometry{
 textwidth = 170mm,
 headheight = 20mm, %30mm
top=32.5mm,
 bottom = 27.5mm,
 headsep = 7.5mm,
 footskip = 10mm
 }
% type your title inside curly braces
\abstractTitle{Title of your extended abstract}
% include authors as directed below, remove add additional fields where necessary
\begin{table}[h!]
\begin{tabularx}{\textwidth} { 
  @{\raggedright\arraybackslash}X
  >{\raggedright\arraybackslash}X
  >{\raggedright\arraybackslash}X }
  % replace name, affiliation, address, and email fields for each author
\abstractAuthor{Name Surnamovich}{Your fantastic affiliation with\newline a very long name}{Company address}{Name.Surname@company.com} &
\abstractAuthor{Name Surnameson}{One line affiliation \newline}{Company address}{Name.Surname@company.com}  &
\abstractAuthor{Name Surnamova}{One line affiliation\newline}{Company address}{Name.Surname@company.com} \\
 
 % vertical separator between authors
 \multicolumn{3}{c}{} \\
 
 % more authors
\abstractAuthor{Name Surnameson}{One line affiliation}{Company address}{Name.Surname@company.com}  &
\abstractAuthor{Name Surnamova}{One line affiliation}{Company address}{Name.Surname@company.com}
 \end{tabularx}
\end{table}
\setlength{\columnsep}{1cm}
\begin{multicols}{2}
% replace contents of curly braces with your summary
\shortAbstract
{
\blindtext[3]
}
% modify and add section names where needed
\section{Theory}%
% replace the following line with your text
\blindtext
% example reference to figure
Figure \ref{fig:sample_figure}.
% replace the following line with your text
\blindtext
% single-column figure-example
\begin{figurehere}
 \centering
 \captionsetup{type=figure}
 \includegraphics[width=\linewidth]{example-image-a}
 \captionof{figure}{My caption for the small figure.}
 \label{fig:sample_figure}
\end{figurehere}
% replace the following line with your text
\blindtext Figure \ref{fig:large_figure}.
\blindtext
\cite{CitekeyArticle, CitekeyBook, CitekeyMastersthesis}
%% this should be placed exactly at the end of the title page
\end{multicols}
\restoregeometry
\setlength{\columnsep}{1cm}
\begin{multicols}{2}
\section{method}
% replace the following lines with your text
\blindmathpaper
\citep{CitekeyIncollection, CitekeyInproceedings}
\section{conclusions}
% replace the following lines with your text
\blindtext
\blindlist{itemize}[3]
\blindtext
% replace with your large figure
\begin{figure*}
  \centering
  \includegraphics[width=0.75\linewidth]{example-image-a}
\caption{My caption for the large figure.}
\label{fig:large_figure}
\end{figure*}
% replace with your table
\begin{table*}
\begin{center}
\caption{Parameters random stuff.}
\begin{tabular} { l@{\hspace{0.5cm}} | *{3}{@{\hspace{0.5cm}}r}} 
\hline
Materials&\multicolumn{3}{ c }{Sample parameters}\\ [0.5ex]
 & $a$ & $K_{df}$, GPa & $\mu_{ss}$, GPa\\ [0.5ex]
 \hline
Mat 0 & 0.34& 1.7& 14.4 \\
Mat 1 & 0.54& 33.9&  5.3 \\
Mat 2 & 0.52& 42.0&  3.2 \\
Mat 3 & 0.00 & 9.6& 8.5 \\
\hline
\end{tabular}
\label{tab:summary}
\end{center}
\end{table*}
% generate bibliography
\bibliography{aegc_2021.bib}
\end{multicols}
\end{document}