Install a LOPA - Life of Plants & Animals 1.12 server through the Control Panel (Servers → Select your server → Game servers → Add Game Server → LOPA - Life of Plants & Animals 1.12)
I was little lost on server settings and controls at first, but the youtube walkthroughs offered are extremely helpful and informative. The looks of the user interface on this website is a little lackluster, yet still smooth and functional.