Hi Ivan and Madalina,
This is a key question you have raised. I wonder if CoP is the perfect place to distinguish Management from Leadership.
Maybe Leadership is what is needed in a CoP, not Management ("holding the reins"). Management could take ownership away from the group.
So, rather than holding the reins, you might use the metaphor, "helping to pull the cart". Leadership by example. Not asking others to do what you don't also do yourself.
Pat