Once you place the schedule on the Layout, Shift-click it to select it, then click the lower right corner of it. This will give you the Pet Palette. On the Pet Palette, pick the option to re-column the schedule. If you move this around a bit, you will see the schedule re-space itself into multiple columns.
You can only control the height, though. You won't be able to specify a specific range for each column.
It's in the user manual, titled "Restructure Schedule to Fit Layout "
Tom Waltz