Trade Question with Auto Rebalance

I have a couple of live portfolios and I would like to launch them to TRADE. I have set up by IB account and it is activated through P123. When I look at my live portfolios though the “TRADE” button is greyed out.
Is it possible to launch a live portfolio and have it auto-trade with IB? Ideally I would treat this specific account to be identical to the live portfolio so the live portfolio would start with the same cash
as the actual IB account and then have it auto-trade and go from there. Is this possible? I am also curious how most users utilize the auto trade feature with IB.

Thanks!

Chris