Unique posts on one page
on my home page I have 4 posts selected by tag in slider as featured posts.
Below that I have some widgets which displays posts from selected category.
How can I make category widget not to show posts which is still displayed in featured slider? I can find solution to exclude posts with certain tag but I still want those posts to show when they go away from featured slider.
Some themes have that option as “unique posts”, and I would like to implement it in my theme