If you need to collate templates into one larger document to send out, you can append them when uploading or later when they're in your Document Library.
To combine PDFs from your Document Library:
Go to Documents > Document Functions
Scroll down to Combine PDFs
Select the first document, this will be the front of the final appended template
Select the second document to be appended (Optionally add more documents to append)
Name the new template
Click on 'Combine', then, once completed, 'Go to Document' to check the final combined template
To combine multiple PDF uploads:
Go to Documents > Upload PDF
Click on 'Upload multiple files'
Once all files have been uploaded, click 'Append these together'
N.B.: files will be appended in the order they finished uploading. So, to ensure accuracy, wait for each file to finish uploading before selecting the next.