The VRCFury setup is relatively simple. There are two prefabs, the Lighter and the Whiskey.
Find the VRCFury Whiskey and Lighter prefabs in the ‘RuneFox/Lighter/Prefabs’ and ‘RuneFox/Whiskey/Prefabs’ folder and drag them into your avatar’s hierarchy so that they become child objects of your avatar.
If your avatar is not at scene origin and you need to move the Prefabs find the ArmatureTargets gameobjects in each Prefab and move them to where your avatar is.
If you need to scale the system, only scale the Root gameobject of each Prefab. Try not to scale any of the gameobjects inside the system itself.
The holster target is set to link to the and intended to go on your Hips as seen in the image below. If you want to place it somewhere other than the hips you’ll need to modify the Armature Link for the Holster.

The right hand target, as the name suggests, goes where the right hand is. You should see a preview version of the Whiskey bottle attached to the GameObject. Move the RightHandTarget and use that as a guide as you move it to your hand.
For the Left Hand Target repeat the same as the Right Hand Target
This GameObject goes where your head is. To see where the Contacts attached to it are, you’ll need to select the HeadContainer gameobject.

Position the gameobject such that the smaller contact is around your mouth.
This contact is the one used to take a swig from the Whiskey bottle. You can edit it’s radius, length, and position if you want it to better fit your avatar’s mouth.
The bigger contact is where you need a Fire Contact Sender to be in order to breathe fire.