Turn the handle to allow changing the angle of your cut. See a nice description of this feature demonstrated on a compounding version of this saw at
https://youtu.be/2-gH9YJU4wE?t=115
February 2023 has a brand-new 50-tooth general purpose blade in it.
We suggest you watch this safety video before using any ToolBox Project miter saw: https://www.youtube.com/watch?v=FVpmjX1DjmI