% reformat appindex section titles
\titleformat{\chapter}[block]{\fontsize{14}{14}\bfseries\centering}{\centering\thechapter}{0.5em}{\normalfont\bfseries\uppercase}[]
\titleformat{\section}{\normalfont\bfseries}{\appendixname~\Alph{section}.}{0.5em}{}
\titlespacing\section{0pt}{6pt}{6pt}
\counterwithin{table}{section}
\setcounter{table}{0}
\renewcommand{\thetable}{\Alph{section}.\arabic{table}}

\phantomsection
\addcontentsline{toc}{chapter}{Appendices}
\begin{custom}{Appendices}

\appendix
\section{Title of Appendix One}\label{appendix:one}
\blindtext
\clearpage
\section{Title of Appendix Two}\label{appendix:two}
\blindtext

\end{custom}