I just got this order from the Battlepass.
It’s description is: Use this order to change upgrade in nodes with multiple upgrades.
It feels like I can change something like backpack to extra weapon or Engineer to Bomber in Upgrade menus.
But I can’t figure out how to get it to work.
I really hope there is a way to change some Group-Ubgrades !
I need to change some and I think there are a lot of people who need’s change some too .
We all learn to play a new Game and we all want to try thing’s and optimize the stuff .
Learning by doing - need’s to test things out and change for other experience !
So I really hope there is a way to change Group-Upgade’s and stuff like that 
I THINK that’s what it is.
I THINK it might not be implemented yet.
Yeah I can’t use it either. Trying to change a radio operator to bomber.
Now there is an Option !!! 
Used it today and it was Glorious