Screen refuses to set

[Valentine]

So i have a boss, and when the boss activates i made the screen set and music change, the music change works but the screen doesn't set

[HeroLinik]

To make the screen set (as in, resize it so it only shows one area), you need to resize the boundaries so it only shows the boss fight where the player will fight the boss. Then under "Position" click on "Set" as you would normally do, and then resize the boundaries back to how it will be before the boss activates.

[Valentine]

is that the same for autoscrolling too?

[HeroLinik]

is that the same for autoscrolling too?

With autoscrolling you just set the boundaries that the player can remain in when the screen autoscrolls, and then set an autoscroll speed. Be mindful you can only do it in section 1, and an event cannot trigger the autoscroll.