scene2 = getScene("scene2")
scene2object = getObject(scene2, "object")

you can create a scene for the GUI of your game, with a camera in "ortho" mode (2d),
in this scene place your items and a text object for your subtitles.

You can enable a scene layer in script using enableCameraLayer

and you can change the text content using setText

I've got a question about subtitles in Maratis. How I can make them in my game?

Thanks.