How to print PDF Portfolio files double sided
I have multiple Digitally Signed PDFs which should be part of one document. Since these are digitally signed, I cannot merge them together. So I created a Portfolio and added all the files in a single portfolio. Now I need to take print of these files, since the individual files are large in number, I need to take double sided print. Portfolio has option to print all files merged also and I am able to select double sided printing also while giving print command. However, the print is coming single sided only. Any way ahead would be appreciated on how to print double sided.
