Parameter Lock Toggle

To enable better understanding, parameter with circle keyform called "regular" or "RG", whereas with rectangular keyform called "blendshape" or "BP".

RG lock
When the objects are keyed with regular parameter, may add a simple RG parameter, with minimum 0 and maximum 1.
0 stores unlocked keyforms.
1 stores lockked keyforms.

BP lock
When the object are keyed with blendshape parameter, can add an empty parameter as BP weight indicator.
Use blendshape weight to control the lock effect.
Example: Give the same object a different set of physics when conditions in BP weight are met.