Some border styles, such as the Diamonds border style, give you the option to change the number of blocks in the border by either using the arrows or typing in a number.

border5

For styles that allow you to change the number of blocks, the default is set to a maximum of 24. If you want to change that, click on the Worktable Options button on the Main Toolbar WorktableOptionsButton. In the Quilt Worktable Options dialog box, click on All Styles under Layout Options and type in the number of blocks.

QWOptionsBlocksInBorder