Find the Prefab in the ‘RuneFox/Skeleton/_Prefabs’ folder and drag it onto your scene then onto your avatar so that it becomes a child object of your avatar.
Right Click on the Prefab and select Prefab→Unpack. We need to do this in order to drag the objects out of the prefab onto the avatar’s armature later.
Expand your avatar’s armature and navigate to the Left and Right Hand bones. These are sometimes labeled as Wrist instead.
Drag the Left and Right Hand Targets onto their respective forearms.
Position the Hand Targets so that they are in or near your avatar’s hands. I usually just set all the position values to 0.
Here we’re merging the FX Animator and Parameters of the Bopper onto your Avatar using Avatars Manager 3.0. If you’ve manually added other complex assets to avatars before this part will be familiar to you.
Open up the VRLabs Avatars 3.0 Manager window by selecting it from the VRLabs dropdown.
Drag your avatar into the Avatar field on the manager window or select it from the popup by clicking on the little target on the right side of the field.
Expand the FX section and click the button at the bottom that says Add Animator to Merge. Find the Skeleton_FX controller in the ‘RuneFox/Skeleton/Animator’ folder drag it into the field under the ‘Merge Animator Mode’ sub-section
Click Merge on Current.
Click the second tab on the left (Mousing over it should show the word Parameters).
Scroll to the bottom until you see the field that says ‘parameters to copy’
Drag the ‘Skeleton Params’ file from ‘RuneFox/Skeleton/VRC_Assets’ to the field mentioned above.
Click Copy Parameters.
Find your avatar’s menu asset. This is the Menu that you can see in your avatar’s descriptor.