Do you have 8 physical printers or?
How are the Print Jobs fired? On Close of Ticket, or via other Button(s) on the screen?
Buttons are Automation Commands, and they invoke an Event called Automation Command Executed. You capture that Event in a Rule, then fire Actions, such as an Execute Print Job Action. Using the Rule Mappings you can control the Terminal that command is effective for.
In essence, this is how you map Print Jobs to Terminals - inside the Rule that fires the Print Job Action, as I showed in my previous post.