Hi @Ekena

Well, If you don't want to allow your users to select multiple categories, you'd rather use 'Category' (singular). That's what 'Category' is for.

The main difference between 'Category'' and 'Categories' is that while with 'Category' (singular), only one category (pre-created by the admin) can be selected, 'Categories' (plural) allows users to select multiple categories (still pre-created by the admin) and/or to suggest/create their own.

Also there is a display (visual) difference between them because they work differently. 'Category' uses a dropdown field while 'Categories' use a multiselect field.

To use 'Categories' without the multiselect functionallity will probably require a custom code to  modify existing code. @LeonidS