NoGBA Link Different Games

Previously i would like to say that i used the search feature and looked for topics about this issue and found none. Maybe the words i used didn't match with a previous topic, anyway i'm posting to make things easier.

I was able to open two NOGBA screens, but as it says in the topic name, it's the same game. I want to trade pokémons from differente versions, what do i do to open differente versions in each of the screens?

When you open the second, do it automaticallly load the same game you are playing?

use vba link, it might be easier clicky