FamilyGrouper

Because Blizzard does not support checking all your own online alts.

So, we found a workaround: once you enable this addon, any time you log in, your current character will be recorded in our addon's table.  
Your alts must have logged into the game at least once to have their names saved.  
Then, you can simply click "One-Click Grouping" to form a party.

However, WoW1 and WoW2 do not share data. I’ve tried many methods, but there’s no way to automatically synchronize two different sub-accounts.  
So, I came up with a method similar to copying talents:  

Export and import... Open WoW1, select "Export," and copy the code string. Then go into WoW2 and click "Import."  
To prevent losing the interface if you accidentally close it, we added an interface option. It’s just a simple checkbox—check it, and the interface reappears.