Hello!

I am Tre and am new to sketchup. I have been using it for about a week and I wanted to introduce myself and ask a question.

I have a circle drawn and it's around 12.7 mm radius. I noticed the segments box after I have drawn lines to the edge of the circle. I want to increase the segments to get a finer circle edge but can't do it. I have selected all around the circle- 24 segments and still don't see how. How do I increase the segments of a circle after I have put lines(components?) to the edge of it?

Thanks for your help,
Tre