I want to implement the following heading styles into my legal paper template in Writer. I have followed the suggested course of using the Outline Numbering tool with paragraph styles appropriately named and modified to follow the required heading format. But I do not know how to make the font style of the heading number non-italicised where the paragraph style for the heading is italicised. The problem heading levels are 2 & 3.
From Australian Guide to Legal Citation Third Edition
Heading Level: Attributes - Number; Text
Heading Level 1: Upper-case Roman numeral not italicised; heading in large and small capitals and centred
Heading Level 2: Upper-case letter not italicised; heading italicised and centred
Heading Level 3: Arabic numeral not italicised; heading italicised and left-aligned