IMPORTANT: WHAT YOU'RE ABOUT TO READ APPLIES TO ALL OF MY GAMES!
I am making something of a retroactive rule change here regarding the treatment of the subject in question. If any of your characters are in a scene that is heavily reliant upon NPC characters, then you have my permission to take control of them in order to see your scene fully fleshed out. However there are going to be some caveats.
1.) Unless the NPCs are minor / nameless enemies then you may absolutely not do them any major bodily harm or kill them.
2.) Contact me if you wish to have them do something significant to the scene, such as handing your Player Character a powerful weapon or directing them to a location that is relevant to the story's plot.
3.) Contact me if you think that what you're planning to have them do could be considered out of character for them.
Please note that GM NPCs such as the Council of Elders on Nel's Row, the Mysterious Stranger, or any major villain are exempt from these conditions since they are 100% relevant to the overall plot and thus cannot be meddled with in any way other than interacting with them through yours truly.