Adding New Music/Sync Root Folder With Prime

Hi everyone, I’m still trying to get my head around the software and how it works. Can someone please let me know how to go about adding new music? In the past, using Traktor or Rekordbox, i just get new music, drop it in the genre folder I want it in, and it gets picked up by the software as a new track and gets analysed. How do i do this in Prime? I added a track for testing purposes into a folder on the drive itself, the folder is added to my Crates already, the track hasn’t appeared in Prime at all and as fast as i can see, there is no “refresh” button. Thank you