Movies not updating

Very new to Plex, so please bear with me.
I have a Plex Pass and running Plex for OpenElec on a Chromebox.
I store my movies on an unRaid server.
Whenever I add a movie to the server it doesn’t show up on Plex.
How do I fix my problem to where the movies automatically update on Plex?
Thanks

After you copy the file into the movie directory, are you performing a scan on the movie library?

i don’t see anywhere on Plex to do a scan of the library.

whoops, just found it.
thought it would be on the chromebox, didn’t realize its on my main plex server.
thank you

https://support.plex.tv/hc/en-us/articles/200289306

I recommend taking some time to peruse the FAQs so you know how to utilize Plex the best possible way.

You are running a Plex Server, right?