MultiKey allows the objects in a chosen collection to have the same shape key edited concurrently.
For example, this means you could have an eyebrow object, eyelid object, and face object, each with a "raised eyebrow" key. You could change the values of all these "raised eyebrow" keys all at once. You can do this with up to six separate keys, which can be enabled/disabled with checkboxes.
MultiKey also makes keyframing shape keys much easier! Just click "Add Keyframes" and all enabled shape keys will be added to the timeline.
- Set all keys to 0 (i.e., "raised eyebrow" on objects A and B both are set to 0)
- Set all keys to 1
- Set all keys to a value
- Clear key names
- Get current frame
You can find more information/update log at https://josephclaytonhansen.github.io/blender-multikey/
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