How is it possible to get the side option of footmisc to work with the manyfoot or bigfoot packages?
The following displays the footnotes in the bottom of the page. The footnotes show on the sides when bigfoot is not used.
\documentclass[twocolumn=true]{scrartcl}
\usepackage{lipsum}
\usepackage{bigfoot}
\DeclareNewFootnote{default}
\DeclareNewFootnote{B}[alph]
\MakeSortedPerPage{footnoteB}
\usepackage[side]{footmisc}
\setlength{\marginparwidth}{2cm}% adjust to your document's needs
\begin{document}
Hello\footnote{This is some text in the margin that should break and everything.}
World\footnoteB{And some more text that should go to the margin as well and behave like
the other footnote.}.
\lipsum[1-3]
Hello\footnote{This is some text in the margin that should break and everything.}
World\footnoteB{And some more text that should go to the margin as well and behave like
the other footnote.}.
\lipsum[4-6]
\end{document}
Edit:
Here is my go at adapting Ulrike's answer:
\documentclass[twocolumn=true]{scrartcl}
\usepackage{lipsum}
\usepackage{bigfoot}
\DeclareNewFootnote{A}[arabic]
\DeclareNewFootnote{B}[alph]
\MakeSortedPerPage{footnoteB}
\newcommand\sidefootnoteA[1]{%
\footnotemarkA
\marginpar{\footnotesize\addtocounter{footnoteA}{-1}\footnotemarkA\raggedright#1}}
\newcommand\sidefootnoteB[1]{%
\footnotemarkB
\marginpar{\footnotesize\addtocounter{footnoteB}{-1}\footnotemarkB\raggedright#1}}
\begin{document}
Hello\sidefootnoteA{This is some text in the margin that should break and everything.}
World\sidefootnoteB{And some more text that should go to the margin as well and behave like
the other footnote.}.
\lipsum[1-3]
Hello\sidefootnoteA{This is some text in the margin that should break and everything.}
World\sidefootnoteB{And some more text that should go to the margin as well and behave like
the other footnote.}.
\lipsum[4-6]
\end{document}
It fixes does put the notes in the margin, and it does a good job with counter A, which is numeric, but counter B doesn't get decremented, so I end up with d for the last note.
Edit 2:
The problem comes from \MakeSortedPerPage{footnoteB}. Commenting it fixes the issue.