If you'd like to define a different design or layout for individual product categories or content pages, you can do it with the template selector included in the Web Designer extension.
Templates are HTML files that define the contents that should be printed on the edited page. For example, you can use templates to define different layouts for different product categories, as well as to change the product category listings that should be printed on the page.
To create templates and individual designs, you need know how to use the HTML and CSS languages as well as MyCashflow's Interface markup.
See the Web Designer extension's help article for detailed instructions on how to create and define templates.