Changing Latex section numbering presentation

Question

I'm trying to change how section numbering is displayed in a Latex document I'm working on. What I want to do is this:

Section Title
    (i) Subsection title in normal weight
        (a) Lorem ipsum (no subsubsection title being used)...

I've come up with the following, but it's not right in terms of indenting etc.

\renewcommand{\thesubsection}{(\textnormal{\roman{subsection}})} \renewcommand{\thesubsubsection}{\indent(\textnormal{\alph{subsubsection}})}

Can anyone point me in the right direction? Thanks!

Solution 1

Use the titlesec package. The titlesec manual is here, and plenty of other resources are available elsewhere.

Solution 2

I don't have a direct answer, but the memoir package provides some help with customization and is very well documented.