i think wp-sticky might be what youre looking for. this is taken from the plugin site:
When you login and write/manage a post you’ll see “Post Sticky Status” down in the lower right hand corner. There are three options “Announcement”, “Sticky”, and “None”. Announcement makes a post always on top no matter what. Sticky keeps it at the top of that day’s posts. So, say you made 4 posts on Wednesday and made one sticky, the sticky one would stay on top of Wednesday’s posts. If you then make a post on Thursday it will appear on top of all of Wednesday’s posts but underneath the Announcement post.
heres the plugin https://www.ads-software.com/extend/plugins/wp-sticky/
you can just set whatever post you want featured as an ‘announcement post’
