With this Datapack you can add a lot more Arrows to the Game. For Example the TNT Arrow or the Teleport Arrow and lot more.
To get The Arrows, you need to drop the matching Item, which you can see on the right Side, on a Fletching Table and shoot the Item with a Bow or Crossbow.
The Datapack also changes the way to craft Tipped Arrows. Now the crafting works like the crafting Recipe for the new Arrows. You need to drop the normal Potion or the splash Potion on the Fletching Table and shoot it with a Bow.
For more fun, you can install the Texture Pack.
Drop the matching Item, which you can see at the Bottom of the Page, on an Fletching Table and shoot the Item with a Bow or Crossbow. (You can't use an Infinity Bow and you need to be in survival or adventure Mode)
To craft an Teleport Arrow you need to drop an Ender Pearl on a Fletching Table.