How do I enable Adoptable Storage on my Iplay 50 Pro Max and Iplay 60 Pro Tablets?

I recently purchased a pair of fast (V30) high endurance Sandisk 512GB sd cards and tried finding the tablet settings that would allow me to mount them as more than just simple file storage but came up empty.

Could someone point me to the relevant settings page for this or has this abilkity never been enabled? If it’s the latter is it something that can be considered in a future update?

https://source.android.com/docs/core/storage/adoptable