Just a question, but how is the 6th finger (Labelled as Extra Fingers) meant to be set up for animations?
When I get into VRchat, they are completely stiff with no motion whatsoever. Is there a way to actually fix that...?
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Actually I figured it out. For anyone in the future that also wants to know:
You need the Modular Avatar VCC addon, as well as VRCFury (Gesture Manager will help here too to test it in the Unity program itself.)
First, locate the Extra Finger bones in the Armature (Root>Hips>Spine>Chest>Upperchest>Clavical>upperarm>lower arm> hand>Extra Finger)
Select the Extra Finger (Either L or R to start), then on the Inspector, click "Add Component"
From the dropdown menu, click Modular Avatar, then click "MA Bone Proxy"
What you're gonna want to do from there is select your target as "Pinkie L/R" (Whatever corresponds to the Extra Finger you just selected, the letters will match up). Set the Attachment mode to "As Child, keep position and rotation"
Repeat these for the individual bones, where 001 lines up to the corresponding 001, and etc. Repeat for both sides
From here, test it out in the gesture manager (won't tutorial how to do this here, but it's easy to look up) and test it out to make sure it's correct...And boom! That pesky sixth finger now works.