如何将摘要移至左栏？

Question

我的问题与此类似问题但是，我希望将摘要部分移至左列，而不是图片，并使用相同的文档类。有人能帮忙吗？

可以找到文档类这里

分数维：

        \documentclass{sigchi-ext}
    % Please be sure that you have the dependencies (i.e., additional
    % LaTeX packages) to compile this example.
    \usepackage[T1]{fontenc}
    \usepackage{textcomp}
    \usepackage[scaled=.92]{helvet} % for proper fonts
    \usepackage{graphicx} % for EPS use the graphics package instead
    \usepackage{balance}  % for useful for balancing the last columns
    \usepackage{booktabs} % for pretty table rules
    \usepackage{ccicons}  % for Creative Commons citation icons
    \usepackage{ragged2e} % for tighter hyphenation

    % \usepackage{marginnote} \usepackage[shortlabels]{enumitem}
    % \usepackage{paralist}


    \title{SIGCHI Extended Abstracts Sample File: \underline{N}ote
      \underline{I}nitial \underline{C}aps}


    \author{%
      \alignauthor{%
        \textbf{First Author}\\
        \affaddr{University of Author} \\
        \affaddr{Authortown, CA 94022, USA} \\
        \affaddr{[email protected]} }}


    \def\plaintitle{SIGCHI Extended Abstracts Sample File: Note Initial
      Caps} \def\plainauthor{First Author, Second Author, Third Author,
      Fourth Author, Fifth Author, Sixth Author}
    \def\plainkeywords{Authors' choice; of terms; separated; by
      semicolons; include commas, within terms only; required.}
    \def\plaingeneralterms{Documentation, Standardization}

    %% Set up our PDF with metadata
   % \hypersetup{%
    %  pdftitle={\plaintitle}, pdfauthor={\plainauthor},
     % pdfkeywords={\plainkeywords}, }

    % \reversemarginpar%

    \begin{document}

    \maketitle

    % Uncomment to disable hyphenation (not recommended)
    % https://twitter.com/anjirokhan/status/546046683331973120
    \RaggedRight{}

    % Do not change the page size or page settings.
    \begin{abstract}
    Please place me at left column
    \end{abstract}

    \end{document}