How do I pose sims in Blender?

I love making tenders of my sims using different poses in blender but I’m struggling with a certain pose. It’s a couples pose and has two different poses that go together but when I use sims 4 studio to export it, it only shows the first sims pose not the second sims pose. It’s also a pose where they move together into a different position so I believe that may be the issue with it only recognising it as a single pose? 

does anyone have any advice?