No8 Portfolio Options

Hi.
I’m using No8 theme obn this website.
I’d like to know if it’s possible to do this:

I’d like to display projects on two different pages.
In the homepage I’d like to display what I call “highlights”, in another page, called projects, i’d like to show all the projects.

So, I created a specific category and I applied it to some projects. When I try to edit portfolio settings so it shows only a specific category, it doesn’t work. I mean, I select the category from the list, then I save and update, but when I get back to the settings the category is disappeared and the portfolio shows all the categories.

What could this be related to?

Thanks.
Cosimo