Thanks Herbert... I think the one I was looking for was named FigSideBySide.lyx but assuming that it uses the same minipages-based
attached the other demo file
Herbert
#LyX 1.3 created this file. For more info see http://www.lyx.org/ \lyxformat 221 \textclass article \begin_preamble \usepackage{capt-of} \end_preamble \language german \inputencoding latin1 \fontscheme default \graphics default \paperfontsize 10 \spacing single \papersize a4paper \paperpackage a4 \use_geometry 1 \use_amsmath 0 \use_natbib 0 \use_numerical_citations 0 \paperorientation portrait \secnumdepth 5 \tocdepth 5 \paragraph_separation indent \defskip medskip \quotes_language english \quotes_times 2 \papercolumns 1 \papersides 1 \paperpagestyle headings
\layout Standard Two figures side by side in a float environment. Have a look at the \begin_inset ERT status Collapsed \layout Standard \backslash verb/ layout->paragraph->more/ \end_inset