How to add class to autogenerated menu items

Hi Gurus,

I'm using CoursePress Pro and it automatically adds a couple of menu items, which is great.

Is it possible to add a classname to them? I'm using a plugin which adds some cool CSS and all I need to do is add a custom classname to apply the CSS. In the case of the menu items, I'm not sure where I would do that.

Thanks kindly,