How do you change tempo in Vocaloid 3 editor?

[JounesKunelle]

Maika speaks too fast for the song. Halp. :holy--:

 

[XJM]

In the main part of the editor (where the channels are I think) scroll to the furthest left and in the upper left corner is a number which is the tempo of the whole project. Just double click that or right click on it and enter the value you want. Hope this helped.