\documentclass[mathpazo]{cmaa}
\setcounter{page}{1}
\renewcommand\thisnumber{x}
\renewcommand\thisyear {2021}
\renewcommand\thismonth{x}
\renewcommand\thisvolume{x}
\renewcommand\doi{10.4208/cmaa.xxx}

\begin{document}



\title{Here is the Title}

% single author:
% \author[AUTHOR]{AUTHOR\corrauth}
% \address{address of AUTHOR}
% \email{{\tt email address of AUTHOR} (AUTHOR)}


% multiple authors:
% Please mark \corrauth after the name of the corresponding author.
% different addresses:

\author[F.~Author and A.~Co-Author(s)]{First Author\affil{1}\comma\corrauth  and Co-Author(s)\affil{2}}

 \address{
 \affilnum{1}\ Address of First Author.\\
 \affilnum{2}\  Address of Co-Author(s).
  }

\emails{
{\tt fauthor@edu.eajam} (F. Author),
{\tt Co-Auhor(s)@edu.eajam} (A. Co-Author)
}

\begin{abstract}
Text of abstract
\end{abstract}


\keywords{At least 3 items and at most 5 items.}
\ams{At least 1 item}
\maketitle

\section{Introduction}\label{sec1}



\end{document} 