The short answer is Yes - but you have to change the way you think of rows and panels.
The trick is that a panel divides a row, but what nobody else seems to have posted is that tables can divide a panel. It's all done in the XML after the fact.
So for your use case, you would only have one row, and a total of three panels. (Plus a hidden row)
<row>
<panel depends="$alwaysHideCSS$">
<html>
<style>
#id_left{
width:33% !important;
}
#id_middle{
width:33% !important;
}
#id_right{
width:33% !important;
}
</style>
</html>
</panel>
</row>
<row>
<panel id="left">
<chart></chart>
</panel>
<panel id="middle">
<table></table>
<table></table>
<chart></chart>
</panel>
<panel id="right">
<chart></chart>
<chart></chart>
<chart></chart>
</panel>
</row>
... View more