Need Guidance and Alteration on My Own Workbook - Creating PDF and Mail

Hi All
I found 1 website with great code and guidance. Just that, it is too complicated and i do not know what i should i do 1st to my own workbook.
After downloading the sample workbook, i found that, there is "functionsModule"'s Modules and the code that i wanted to use is "CreatePDFMail".

I had attached my workbook name "Screening.xlsm" and Sample of workbook from MSDS name "PDF-Example".

What should i do on my workbook "Screening.xlsm"? Do i need to write down things like the sample workbook on, "Microsoft Excel Objects"> Info(Info)? Before proceeding with VBA Code?