IK Pinned

Hi,

I'm trying to modify a crawling animation.

In certain frame area, the hand must remain stationary, with no change in position and rotation.

I think it can be done using IK Pinned option.

It works, however the position and rotation of the hand are fixed only when all the backend keys are removed.

For the next animation, IK Pinned option must be released again after some frame area.

Isn't it possible only work in a specific frame section?

Regards,

Scott Hong