Pixelmon Mod

My friend has Pixelmon Reforged (the latest version) installed. We also installed Biomes o' Plenty, since he was encountering issues with trying to get Pixelmon to work without it. We were curious about which legendaries spawn where. However, when I look up how to configure that or even try and find a list, no list can be found and the only mod suggested is "Spawn of Psyduck" which is outdated.

Is there any way for us to see which legendaries will spawn in the BoP biomes? Or even to possibly change it?

enable external jsons