IBP Operators Authorizations in IBP 5.0

Hello, community.

Currently we are using COPY planning operator for a plan approval process meaning that we are doing approval via copy of value from one key figure to another. So in that case we need to restrict access to certain variants of COPY operators to certain people. As I've checked authorizations in IBP 5.0 we can only maintain access to operator itself not to it's value.

So how we can develop such an restriction, what are the options?

Thanks, Andrey.