This is written in the manual (You can download it on the modification page). But there is no video, because this is a new entity (CustomEnemyCollision) from the mod. It's unlikely that anyone made a new video about this. There should already be some kind of guide about all old entities.
I highly recommend joining the SeriousSite discord. Then the community will be able to help with questions more quickly. There are some English-speaking users there and they can also be helped with questions. No need to be shy)