Additional Data Cubes?

Hello!

I'm hoping someone can give me an assist. I have just started delving deep into Tessitura Analytics. Loving it so far!  

From what I understand, more than one data cube can be added to a dashboard, but I can not for the life of me figure out how to do this.  I've also noticed this ability on a couple of .dash files that I pulled off of the forms.  But when I search how to do it, I come up empty.  Does anyone have an insight into how to add more than one data cube?   

It should be noted that we are on RAMP.   I'm hoping this isn't just a self-hosted thing. :/

Thanks in advance!
Kristine