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The Categories Menu is used to establish the category browsing structure that will be used throughout the site. The highest level category is the System Category of "main". This is not an actual category in the system but considered the "parent" for all the first level categories. The highest level categories that you will enter will be applied to/under "main". You can then enter 'categories' (now called subcategories) to your main level categories if you like. The software will allow you to enter as many categories and subcategories levels as you desire.
We suggest keeping your categories to a manageable level. Too many categories can make your site hard to navigate. Categorizing listings too much using categories can leave some categories empty or with few listings.
You can easily add new categories to a site that has too many listings in one category. It is a bit harder to remove a category as listings in that category will need to be moved to a parent category in the process.
<tip c n>NOTE: Keep in mind, however, that a high number or categories and subcategories (thousands for example) can slow down the script/server in certain instances. So, remember this for planning purposes when setting up you category structure.</tip>