Como modificar este código para escrever afiliação dos autores?

Question

Criei com sucesso um documento de resumos para futuras conferências com base neste código que está disponívelaquimas alguém poderia me dizer o que devo modificar para produzir afiliação de autores? Muito obrigado.

\documentclass[11pt,a4paper]{article}

\usepackage[ngerman]{babel}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{blindtext}

\setlength{\parindent}{0cm} % Default is 15pt.

\usepackage[titles]{tocloft}

\newcommand{\listabstractname}{List of Abstracts}
\newlistof[section]{abstracts}{abs}{\listabstractname}

\newenvironment{abstracts}[1]{%
\refstepcounter{abstracts}%
\small%
\begin{center}%
  \textbf{#1}%
\end{center}%
\quotation%
\addcontentsline{abs}{abstracts}{#1}%
}{%
\endquotation%
\clearpage%
}

\newcommand\abstractauthor[1]{\authortoabs{#1}\printabstractauthor{#1}}

\newcommand{\printabstractauthor}[1]{%
{\noindent\centering\scshape#1\par\nobreak\vspace*{35pt}}%
}
\newcommand{\authortoabs}[1]{%
  \addtocontents{abs}{\vskip-10pt}%
  \addtocontents{abs}{%
    \protect\contentsline{section}{\hskip1.3em\mdseries\scshape\protect\scriptsize#1}{}{}}%
  \addtocontents{abs}{\vskip5pt}%
}

\begin{document}

\listofabstracts
\clearpage

\begin{abstracts}{This is a test title of an abstract}
\abstractauthor{First Author, Second Author}
\blindtext[3]
\end{abstracts}

\begin{abstracts}{This is a second abstract}
\abstractauthor{First Author}
\blindtext[3]
\end{abstracts}

\end{document} 

Answer 1

Experimente esta abordagem simples.

% !TeX TS-program = pdflatex

\documentclass[11pt,a4paper]{article}

\usepackage[ngerman]{babel}
\usepackage[utf8x]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{blindtext}

\setlength{\parindent}{0cm} % Default is 15pt.

\usepackage[titles]{tocloft}

\newcommand{\listabstractname}{List of Abstracts}
\newlistof[section]{abstracts}{abs}{\listabstractname}

%%************************************ added <<<<<<<<<<<<
\newcounter{authornum}
\newcommand{\TA}{\stepcounter{authornum}\textsuperscript{\theauthornum}}

\newcounter{affilnum}
\newcommand{\TF}{\stepcounter{affilnum}\textsuperscript{\theaffilnum}}

\newcommand{\afillauthor}[1]{\par\medskip\noindent\hfill\TF#1\hfill}

\newcommand{\printabstract}[1]{\par\vspace*{2em}#1}
%%************************************

\newenvironment{abstracts}[1]{%
    \refstepcounter{abstracts}%
    \setcounter{authornum}{0}\setcounter{affilnum}{0}% added <<<<<<<<<<<<   
    \small%
    \begin{center}%
        \textbf{#1}%
    \end{center}%
    \quotation% 
    \addtocontents{abs}{\vskip2ex}% added <<<<<<<<<<<<  
    \addcontentsline{abs}{abstracts}{#1}%
}{%
    \endquotation%
    \clearpage%
}

\newcommand{\printabstractauthor}[1]{% changed <<<<<<<<<<<<
    {\noindent\hfill\scshape#1\TA\hfill}
}%

\newcommand{\addauthortoToC}[1]{% added <<<<<<<<<<<<
    \par\addtocontents{abs}{%
        \protect\contentsline{section}{\vskip-1.7\baselineskip\hskip1.3em\mdseries\scshape\protect\scriptsize#1}{}{}}%
}


\begin{document}
    
    \listofabstracts
    \clearpage

    \begin{abstracts}{This is a test title of an abstract}
        \printabstractauthor{First Author}
        \printabstractauthor{Second Author}
        \addauthortoToC{First Author, Second Author}
        \afillauthor{University One}
        \afillauthor{University Two}
        \printabstract{\blindtext[3]}
    \end{abstracts}
    
    \begin{abstracts}{This is a second abstract}
        \printabstractauthor{First Author}
        \addauthortoToC{First Author}
        \afillauthor{University Three}
        \printabstract{\blindtext[3]}
    \end{abstracts}
    
    \begin{abstracts}{This is a third abstract}
        \printabstractauthor{First Author}
        \printabstractauthor{Second Author}
        \printabstractauthor{Third Author}
        \addauthortoToC{First Author, Second Author, Third Author}
        \afillauthor{University One}
        \afillauthor{University Two}
        \afillauthor{University Three}
        \printabstract{\blindtext[3]}
    \end{abstracts}
    
\end{document}