two live account, two license.
create account group (named "real group") include two live account.

When i connected to live account №1- i may choose in chart trader only "real group" and "live account №1".
When i connected to live account №2- i may choose in chart trader only "real group" and "live account №2"

as i understand in theory i should select account 1 on chart1, select account 2 on chart 2 for manage orders, which appear after filling order on chart 3 with selected "real group".

How manage orders on two accounts with "Account group"?
What should i do with connection to allow select two account in chart trader?

Edit
Question solved - need setups on broker side.

You need to have a connection that give access to both of the accounts,
or you need two connections to be open.