\documentclass[a4paper, 10pt, twocolumn]{article}
\usepackage{amsmath,amsfonts,amssymb,amsthm,bm,mathtools}
\usepackage{graphicx}
\usepackage{dcolumn}
\usepackage{url}
\usepackage{flushend}
\usepackage{layouts}
\usepackage{siunitx}
% Standard bibliography customisations
\usepackage[style=numeric,sorting=none,backend=bibtex,url=false,doi=false,isbn=false]{biblatex}
\addbibresource{/path/to/library}
\renewcommand*{\bibfont}{\footnotesize}
\renewbibmacro{in:}{}
\DeclareFieldFormat[article]{volume}{\textbf{#1,}\,}
\DeclareFieldFormat{year}{(#1)}
\DeclareFieldFormat[article, thesis]{title}{#1}
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\setlength{\topmargin}{-1cm}
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\makeatletter
\let\@contact\@empty
\newcommand\contact[1]{
\def\@contact{#1}
}
\renewcommand{\maketitle}{
\twocolumn[
\begin{@twocolumnfalse} %this short command ensures that that the title and authors stretches over two columns
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{\Large\textsf{\textbf{\@title}}}
\vspace{10.0pt}\\
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\textsf{\textbf{Contact: }}{\tt\@contact}
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]
}
\makeatother
\usepackage{titlesec}
\titleformat{\section}
{\normalfont\sffamily\normalsize\bfseries}
{\thesection}{1em}{}
\titleformat{\subsection}
{\normalfont\sffamily\normalsize\em}
{\thesubsection}{1em}{}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\title{CLF Annual Report Template}
\contact{email@address.com}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\author{
\vspace{10.0pt}
\noindent\begin{minipage}[t]{\columnwidth+0.65\columnsep}
\textbf{Author}\\
\emph{Affiliation
}
\vspace{10.0pt}\\
\textbf{Author}\\
\emph{Affiliation
}
\end{minipage}
\begin{minipage}[t]{\columnwidth}
\textbf{Author}\\
\emph{Affiliation
}
\vspace{10.0pt}\\
\textbf{Author}\\
\emph{Affiliation
}
\end{minipage}
}
\begin{document}
\maketitle
%=================================================================================
\section*{Abstract}\label{sec:abstract}
%=================================================================================
Abstract
%=================================================================================
\section{Introduction}\label{sec:introduction}
%=================================================================================
%=================================================================================
\section{Conclusion}\label{sec:conclusion}
%=================================================================================
%=================================================================================
\section*{Acknowledgements}
%=================================================================================
\printbibliography
\end{document}
