I am trying to create a portfolio site where the user should be able to add categories to the portfolio page and when the user creates a portfolio item, they can select which category the item belongs. I can do this currently by adding documents under the portfolio category document and using a content picker to select the category, but if I change the categories to a list view, I am no longer able to use the content picker. Does any one know what the best way is to add categories to umbraco? This would be useful for news items or products as well.

Lee