I have a US and EU account, how can I see my EU friends in the battle.net app?

Hi, as the title states, I have both a US and an EU account for World of Warcraft, and I have friends in both regions I would like to be able to talk to on the app when I am not in game.

Is there a way to do this with the app, or might I need two different installations maybe?

Thanks for any help or advice in advance!

Actually, I think I have figured this out. In the settings I can allow multiple battle.net instances and disable auto-login feature. Then I open another instance of Battle.net and choose Europe region for that instance while leaving my other instance logged into Americas region.

This seems to work, though it is a little funky. lol