I need to know how to change the paragraph margins for paragraph styles in scrivener. Any ideas?
Adjust a paragraph to what you want and then Define Style from Selection. You will want to show the Ruler bar and adjust the little left/right margin widgets for that paragraph.
p.s. Kevitec57 thought you were asking about page margins.
You can also do it here :
And then redefine your style by selecting a chunk of the paragraph that is now indented (margin) the way you want it, and
Format / Style / Redefine style from selection > Pick your style from the list.