How to add advisors to title page in a predefined theme

Question

I am using the metropolis theme to create a beamer presentation. I would like to include in the title page, on the left, my name as main author, and on the right, a column named "advisors" with the name of my advisors. Something like this image:

This is a very basic MWE without the advisors part:

\documentclass[10pt, aspectratio=169]{beamer}
\usetheme[progressbar=frametitle]{metropolis}
\usepackage[american]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\title{\textbf{Title}}
\author{Main author}
\date{}
\begin{document}
\maketitle
\end{document}

I am struggling on how to include the advisors column here.

Answer 1

It seems this is a quite common question. Anyways, you could try with:

\documentclass[10pt, aspectratio=169]{beamer}
\usetheme[progressbar=frametitle]{metropolis}
\usepackage[american]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\title{\textbf{Title}}
\author[Author names]{%
    \parbox[t]{7cm}{%
        \textbf{Author} \
        Affiliation
    }%
    \parbox[t]{7cm}{%
        \textbf{Advisors} \
        1st Advisor \
        2nd Advisor
    }%
}
\date{}
\begin{document}
\maketitle
\end{document}

Note that you should use the optional argument for \author to include a non-styled version of the authors' names.