So far I was able to write this but as you see is far from what I would like to achieve. I'm finding difficult to nest the braces. I would prefer to not use the math mode.
Can someone could please help me?
$
\parbox{2cm}{atti tipici di iniziativa della p.g.}\left \{
\begin{array}{l } \parbox{3cm}{atti di coercizione personale}\\
\parbox{3cm}{atti di acquisizione probatoria} \left \{ \begin{array}{l } \parbox{3cm}{atti di acquisiszione probatoria soggettiva}\\
\parbox{3cm}{atti di acquisiszione probatoria soggettiva}\\
\end{array} \right.
\end{array}\right.
$

schematais made for this. See https://tex.stackexchange.com/a/313792 for an example. – Thérèse Dec 23 '18 at 01:32\schematoo many in your code: the one after\schemabox{atti di acquisi-\\zione probatoria}is unnecessary (and it has\bigskipas its second argument). I've removed it, see here for a fixed version. – Circumscribe Dec 23 '18 at 19:25figureortableenvironment and give it a\caption. Or you can define your own floating environment using\DeclareFloatingEnvironmentfrom thenewfloatpackage. If you want a caption without , there's\captionoffrom thecaptionpackage. – Circumscribe Dec 24 '18 at 08:39enumitemand use\parbox{<width>}{\begin{itemize}[leftmargin=*,labelindent=0pt]…\end{itemize}}. – Circumscribe Dec 24 '18 at 09:22