How to discuss growth with my Engineering Manager during 1:1?

I have read and heard it several times, that in one on one’s with your manager discuss your growth with him, but I never understood it, how to do it in every 1:1 or more than once or twice? Growth is something very simple to me Software Engineer to Senior to Principal to Staff etc

And you keep working at next level and you get promoted, but what discuss about it in every 1:1 ?