Just to cover my ass
This is the Cura profile that was made by ELEGOO and I modified it to work with the newest version of cura and removed some unused defaults. I have also added the STL of the bed from the original Neptune 2 STEP files
Hard: Just download the master zip and drop the contents into your cura install folder or Appdata
Easy: Download the plugin version from the Releases section and drag and drop into the cura windows
Just-Trey made some printer profiles for this machine definition.
Those can be found here: https://github.com/just-trey/elegoo_neptune_2_CHEP_cura_profiles
Merrik over on Thingiverse made an alternate bed mesh you can find that here: https://www.thingiverse.com/thing:5141570
How to get icons on print screen