\renewcommand\paragraph{\@startsection{paragraph}{4}{\z@}% {-2.5ex\@plus -1ex \@minus -.25ex}% {1.25ex \@plus .25ex}% {\normalfont\normalsize\bfseries}} \setcounter{secnumdepth}{4} % how many sectioning levels to assign numbers to \setcounter{tocdepth}{4} % how many sectioning levels to show in ToC \subsection{Use Cases} \subsubsection{Visitor registration} \begin{tabular}{| l | l |} \textbf{Actor} & Visitor \\ \textbf{Goal} & [G1]\\ \textbf{Input Condition} & \\ \textbf{Event Flow} & \\ \textbf{Output Condition} & Visitor successfully registers and become a Passenger. From now he can log in to the application\\ \textbf{Exceptions} & Visitor already registered, One or more mandatory fields are empty, Username already in use, Password doesn't respect the constraints. \end{tabular} \end{table}