I tried it in 4.18.2, and had the same issue. Couldn’t see the event. The soundfile of the audiocomponent is proper set up with EnvFollower preset and SourceChain, but the event isn’t seen through the audio component in BP.
Here’s one way to set it up, and find the event(most of the process here is found in the quick-start guide that’s stickied on this forum)
1: Create source effect and chain
2: Configure your sound-file with the presetchain
3: Set it up in BP(notice that the event is found under envfollower component; not the audio component)
There are(or will be?) ways to set this up mostly in BPs, by creating+linking+initializing everything dynamically, but this is the method I quickly set up now, and it works 


