# Multiple affiliations of an author in sig-alternate

I am trying to put two affiliations for an author in sig-alternate (ACM SIG Proceedings), for the second author. So effectively, the second author should be over both the second and the third affiliations. But there is no way I can keep the third author field blank and have only the affiliation there. Is there any other way to do this?

\author{
\alignauthor
First Author\\
\email{somemail@someserver.edu}
\alignauthor
Second Author\\
\email{otheremail@company.com}
\alignauthor
Test author\\
\email{larst@affiliation.org}
}

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Welcome to TeX.sx! It's not clear what you're for; should "Second author" be above both affiliations? –  egreg Mar 7 '13 at 18:08
Thanks! Yes, second author will have two affiliations. –  Abhishek Chanda Mar 7 '13 at 18:45

For two authors I'd go with \and rather than \alignauthor, using a nested tabular for the two affiliations:

\documentclass{sig-alternate}

\begin{document}

\title{Paper}

\author{%
First Author\\
\email{somemail@someserver.edu}
\and
Second Author\\
\begin{tabular}[t]{@{}c@{}}
\email{otheremail@company.com}
\begin{tabular}[t]{@{}c@{}}