Hi Donso,
It looks like you have the rig set to IK. That means the FK bones will not work.
To get the UI to activate, make sure you link in the script (or append) just link you linked in the character.
Then run it it in the text editor.
You also don’t want to ‘edit’ the values you want to animate them – so that’s just keyframing them (with the ‘i’ key).
Those properties live in the Hand_IK bones but are more easily accessible with the ui script.
Here is the rig demo in 2.78. https://cgcookie.com/lesson/vonnbots-rig-demo
This should explain how that all works.
The only difference in 2.8+ is that you link in the master “collection” rather than the ‘group’. The master collection is the one in capital letters. You also need to link in the rig ui script in the same way as I’m yet to learn how to do that automatically in the newer versions of Blender. (the old way was technically a hack that doesn’t work anymore)
Hope that helps.
Let me know if you’re still stuck.
