As the Player you are one character in someone else’s world. Each turn you walk, say one line and do one thing.
Then send the beat. The Controller decides what happens and answers. You never know quite what they will do with it, and that is the fun.
On a computer, arrow keys move your character and N picks something to act on.
The Controller’s answer appears when it is sent. Turn on notifications to hear when it is your cue. If the other seat stays quiet for a while, you can send a nudge.