Healbot bars expanding question

Hello, I have question regarding healbot setting. When solo I have only 1 bar, which I’ve put in the center just below my weakauras. But when I join party, new frames show on the left or on the right of my main bar, which means it’s not centered anymore. Is it possible to set it to expand 2 bars to the left and 2 bars to the right, so all 5 keeps centered? I don’t mind if my character bar changes position.