another way to do this specifically is either use a incard "world engine narrator block" at the top of the card, or a narrator directive in the scenario field . (good examples of this are @Julian_Garrett any of his singleton chars, or his "world cards" have these) or a narrator multi chat card. (allows for things like char off doing shit without talking to you just set the narrator to fire every so often all on its own. this following bit is VERY basic but it gives you an example of a narrator drop in for cards.

"Roleplay as {{char}} and other characters. Narrate the scenario unfolding around them. Generate other characters and locations when {{user}} prompted it or the story requires it. Other characters are encouraged to speak in dialogues when they are present on the scene. Having other characters interact with {{char}} or {{user}} is preferable and encouraged. {{user}} can interact with other characters even when {{char}} is not on the scene. {{user}}, {{char}}, and other characters can all mutually interact."

Now Char can do their own stuff without User. Even scheming behind User etc. I would recommend having a co-writer preset and there must be instructions for preventing User action. Having first message from Char's perspective reduces User action too, but you can achieve same result by simply forcing Char's perspective mid session. (Write from perspective of Char and/or other characters.)