I think DeadlyBreakfast meant separate *worksheets* within a *workbook* (i.e. an excel file). That is, the different tabs that are in the lower left of an Excel document.
I didn't see a way to do that in AppleWorks either. Wow, I'm surprised. Of course I have Office.X so I haven't used it that much, but that's kinda a gimme feature for AW6 to have....