You would need to create your own layout
There is no point to search for documentation on that particular topic as there is no concept of layout in jboss portal. The team is trying to hide the fact and would not answer in a genuine way, when they do and as they should, they just don't get it. They are either simplistic about it or deny it, classic ways to deny.
What you have instead is a page referring to a "layout" actually a jsp file, you should write your own and implement layouts but then there will be nothing to support it, changing layout, changing regions... and will not work with renderer as renderers (decoration, portlet, region, layout) lacks concept of layout.
There is a PF ongoing work item, sit and pray... Things happen.
I am confused by this:
There is no point to search for documentation on that particular topic as there is no concept of layout in jboss portal.
Here is the link to the docs:
Are they not layouts like you would expect? They are working great for us...[/url]
It's working great but it's just a name on something not a concept, it's flaky.
So, summing up...there's no "easy" way to do it?
Yes there is: use the YUI 2.5 kit, use their layout manager or their grid (grid.css) - redefine your own layout to fit your needs. The YUI kit is very well documented and they are fast at answering questions on user forum, even naÃ¯ve questions, it's very nice.
Now, if your needs are simple then it will be nice and easy, if your needs is to control the layout of a page or a region in the portlet event loop then it is more difficult : undocumented, unexplained, almost unreadable and not answered yet.