Just got Nova Launcher, how do I center button?

[Ursidaeus]

I want to have 7 apps on my dock but the main button (the one with 6 circles) isn't centered. How do I move it?

 

[Gekko]

I want to have 7 apps on my dock but the main button (the one with 6 circles) isn't centered. How do I move it?

long press.

 

[Ursidaeus]

Oh wow. Thought it wasn't working because I pressed it as long as the other apps. I guess it's an extended longpress.