I manged to enable horizontal scrolling as shown here. But exporting it to PDF shrinks the widths back to standard. Even if I use scaling and A3 landscape as paper size.
This is a sample dojo showing the effect. There is plenty of unsed space on the right side.
How can I create a PDF showing one page per group and use the available page size?
Your example doesn't help me much, because the result is quite ugly (the next day is intended) and it doesn't page per group/day.