[No print ready pdf option]

I understand but thats what I'm asking to find the button for haha I'm going to assume its a seperate installation then since I'm on Windows and cannot find this option, but would you have any idea where I might be able to find this installation? 

[No print ready pdf option]

Hello ! I really need to print a booklet i'd created for university, but the university printers/computers dont have affinity, I saw that in the tutorials i've seen the people have been able to save their booklet in ready to print order from the print tab, but I don't see this option?