Badges update automatically and link to the resource pack page on MineUniverse.
Datapack for the Pixelmon Mod, that changes the "First Come, First Serve" setting in Pixelmon Grottos to "TIMED", which is configurable in the "spawning.yml" for Pixelmon..
This will only affect newly generated Grottos, which means new chunks.
Pixelmon, powered by: https://pixelmonmod.com/