2talk number port

Hi, I want to port my snap/2degrees number over to 2talk. I already have an account with 2talk, and I want to keep my existing 2talk number and add a second line with the ported number.I can't tell from the 2talk web system the right way to do this so that I add another line and not port the snap number over the top of my existing 2talk one.Should I add a second regional line first, then select port?Or will selecting "port a number" add another line automatically? CheersBruce