How do you select nozzle for singl color print

Ok, This may have already been asked, but didn’t find anything in my searches. If it has please point me to it.
How do you select which nozzle to use for a single color print. I don’t see any switches to select when creating GCode. All I see are switches for adhesion and support.

Where you find the adhesion and the supports, you will see your object above, where you can also select nozzle left/right.

Hi. Yes, I saw that button and tried it. Nothing changed. Still printer used the Left nozzle. I will try it again. Thanks.

Next to your object you will see something like a comb. Click on it and left and right will appear.

Ok. I selected the right extruder. The printer still won’t print with it. Whatever I do, it always uses the left extruder. I’ve tried rebooting the printer and Luban. At a loss right now on what is going on.

Regards

Terry