News in different sections

Hey guys,

I’m building a news website and I need a functionality. On the homepage the website has two sections and I want to achieve the following:

SECTION 1: Slider with the 4 most recent newsitems

SECTION 2: List with thumbnails with the rest of the most recent newsitems. So starting from item 5.

At this moment I can add newsitems in those two different sections by giving the sections a different category to output. But if I add a new item to the slider in section 1, I want the oldest item from the slider to be shown in section 2.

To summarize:
Newsitem: 1, 2, 3, 4 in the slider of section 1.
Newsitem: 5, 6, 7 in the list of section 2.

If I add a new newsitem to the slider of section 1, the current 4th newsitem should be moved to the list in section 2. So you get:

Newsitem: 0 (NEW item), 1, 2, 3 in the slider
Newsitem: 4 (comes from slider), 5, 6, 7 in the list

How can I make this work? Thanks in advance!

Peter