How to change default list format

Hello, my default list format (when I press (⌥ ⌘.) is shown below as #1 (tab -circle-tab) which I would like to change to tag-circle - one simple space (instead of another tab), but I am unable to figure out how to do so.

thanks very much.

what I tried and did not work: I selected #2 and tried to define new paragraph style from it, but it did not work. I could not even find (⌥ ⌘.) among the menu items.