Newb profiling question

Hello, everyone! Newb question here. When it comes to my return level when profiling an amp, am I basically looking to get the light to be flashing in the yellow most of the time but never in the red? Or should it stay in the green and occasionally flickering in the yellow?

I read the manual, but I feel like I never found a definite answer on this, so I'd love to hear experiences from people who are getting great results. I'm planning on doing merged profiles if that makes a difference.

And, if I missed this information in the manuals, my apologies

Thanks in advance!

Mike.

Another question I had is before I start the profiling process when it shows the eq and gain on the kemper all at noon, do I change those settings on the kemper to around what the settings on my reference amp would be before I start the profiling process? I couldn't find any definite answers on these things.