If you mean the small »circles« that are arranged around the big circle you could achieve that with a hard brush with the appropriate Spacing set in the Brush Panel.
Or you could create a Path with two opposing small circles, copy/paste those, transform them (command-T) and then use Transform Again (command-shift-T) as many times as necessary. Edit: And then use the Path as a Vector Mask for a Solid Color Layer for example …
Or you could create a circle Layer and use a Script.
very friendly, I've done, and I went well. :-)
thank you very much
Paraberto, what do you need to mark it as CORRECT ANSWER instead of a helpful one?
You have got, not one. but 3 ways of achieving that, with detailed instructions and pictures.