Cannot find a way to edit the category list.

Hi Miguel,
I am trying to use the plugin but whenever I try to edit the category list on the widget it doesn’t give me the option of doing so, I mean it doesn’t give me any option to “save” or delete the excluded categories, instead it gives me a list of all the categories and that is what appears on the site, I was under the impression I could add this as a widget twice in order to show lists of several “groups” of categories (multiple instances as a widget)for that I need to be able to hide/exclude categories otherwise it will only show the same widget every time.

https://wordpress.org/plugins/jquery-categories-list/