by loren_d_c » Wed Apr 22, 2009 12:34 pm
If you have ShopSite Pro (this feature is not available in Manager or Starter) then it is the 'Number of Products per generated page' setting at the bottom of Pages -> Edit Page Layout.
Another setting related to this is the 'Maximum number of pages for Pagination' setting in Utilities -> Publish. This is a global setting to prevent a lot of additional HTML pages from being created accidentally. If there are more products assigned to the page than it would take to make this many pages according to your 'products per page' setting, then the remainder of the products will all be placed on the final page.
-Loren