When using Duplicate Account Actions to copy trades across multiple accounts, you will need to select one Master account and at least one Follower account.

Double click on the connected status dot button to the left of the account name to configure it as a master account. You will see the account row highlighted after doing this. You can also deselect an account as a Master account by repeating this action.

Single click on the account name to configure it as a follower account. You will see the account row highlighted gray after doing this. You can also deselect an account as a Follower account by repeating this action.