\documentclass[PhD,cmmath]{bitsgoathesis}
\usepackage[round,colon,authoryear,sort&compress]{natbib}
\usepackage{ifthen}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{imakeidx}
\usepackage{hyperref}
\graphicspath{{images/}}
\setlength{\bibsep}{0pt}
\bibliographystyle{apalike}
\usepackage[T1]{fontenc}
% \usepackage[round]{natbib}
\usepackage{indentfirst}
\def\sfthing#1#2{\def#1{\mbox{{\small\normalfont\sffamily #2}}}}
\sfthing{\PP}{P}
\sfthing{\FF}{F}
\makeindex
\newcommand{\candidatename}{Candide, ou l'Optimisme} % GIVE THE CANDIDATE NAME HERE
\newcommand{\candidatenamecap}{CANDIDE ou l'OPTIMISME}
\newcommand{\candidno}{20**PH******}
\newcommand{\thesistitle}{The Theory of Soap Bubbles} % GIVE THE THESIS TITLE HERE
\newcommand{\supername}{Prof. Pangloss} % all such irrelevant information ...
\newcommand{\supernamecap}{Prof. PANGLOSS}
\newcommand{\superdesig}{PROFESSOR}
\newcommand{\cosupername}{Fran\c{c}ois-Marie Arouet \textit{Voltaire}}
\newcommand{\cosupernamecap}{FRAN\c{C}OIS-MARIE AROUET \textit{VOLTAIRE}}
\newcommand{\cosuperdesig}{French Enlightenment writer, historian, and philosopher, famous for his wit, his advocacy of freedom of religion, freedom of speech, and separation of church and state}
\begin{document}
\frontmatter
\thispagestyle{empty}
\input{FrontMatter}
\clearpage
\thispagestyle{empty}
\input{Abstract}
\part*{\addcontentsline{toc}{chapter}{Acknowledgements}}
\input{ack}
\tableofcontents
\pagestyle{headings}
\part*{\addcontentsline{toc}{chapter}{List of Figures}}
\listoffigures
\part*{\addcontentsline{toc}{chapter}{List of Tables}}
\listoftables
% \part*{\addcontentsline{toc}{section}{List of Symbols}}
\input{symblist}
% \end{frontmatter}
\mainmatter
\onehalfspacing
% the chapters
% spacing in figures and tables and their captions can be
% changed here (\ssp for single-space, empty for same as surrounding
% text); for this to work, the command \figsp has to be included
% in every figure and table right after the \begin{figure}
\def\figsp{\ssp}
%\def\figsp{}
\include{Intro}
\include{HowToUseThisTemplate}
\include{chapter1}
\part*{\addcontentsline{toc}{chapter}{Appendix A}}
\appendix
\include{scholarbio}
\include{guidebio}
\part*{\addcontentsline{toc}{chapter}{Bibliography}}
\bibliography{biblbabl}
\part*{\addcontentsline{toc}{chapter}{Index}}
\printindex
\end{document}