Hallowed Fantasy Pixelmon updated to version 1.1
Added Hallowed Music Resource Pack
Added Pixelmon Reforged version 6.3.4
Added GameShark side-mod
Added OptiFine mod
Type in the modpack name (Hallowed Fantasy Pixelmon) or paste the following url into the search box.
Finally, click Install at the bottom right of the launcher after you select Hallowed Fantasy Pixelmon from the list on the left. The launcher will handle everything else!