Note: This is my first KSP forums post, so I hope it's alright and in the right category.
So I've been trying to remake the "Nerv" atomic engine as it seems a bit boring. I've edited the title, description, and manufacturer successfully, but I can't seem to figure out how to create a custom plume with the mod Waterfall (undoubtedly one of the best KSP mods.) I know how to use the in-game editor and have created quite a nice plume with it, but I do not know how to export the plume and have it be applied to the Nerv engine. I did try and follow Nertea's documentation of the mod here, but the instructions on how to create a template and use it were quite vague.
(I clicked "Generate template from and copy to clipboard AND gave the template a name. I also have Waterfall Restock and StockWaterfallEffects installed, but I'm not sure if those interfere.)
Next, I created a .cfg file, as the documentation says, in my GameData > Waterfall > Templates called "waterfall-fusion", and pasted my copied template in there (it's quite long, so you might not want to read it. )
Then, I pasted the .cfg file name into GameData > StockWaterfallEffects > Engine Configs > Nerv, as shown here:
Hopefully this was enough information for some to (maybe) help solve my problem, if you can that would be great! Thanks!