If you don’t want to go down the path of opening up overseerr to the network and having to browse to it as others are suggesting (and is the normal way to use it), you could just set it up to watch the Plex watchlists and automatically add them that way
Then in Plex, you just search the movie or show you want, add it to your watchlist, And overseer will grab it and send it to radarr or sonarr to download
I don’t recommend this method because it’s not how overseerr was designed, and you miss out on a bunch of the features, I’m just offering this as an alternative since I’m guessing you aren’t too familiar with web services on a network
effward
ladfrombrad