Hi! Question about stems. :)

Hi! As usual I can't explain in English, so I have two pics.

Pic 1. The red ring shows the original notes. All stems at the same direction.

Pic 2. The red ring shows my MS score. The stems has different direction and I can't change that.

Don't ask why I want this ^_^ I just do want to know how to change this. I did not succeed trying the right menu "stem direction".