PDFCreator licensing rules

I want to use PDFCreator in an RDS environment. Should PDFCreator be installed on each Session Host server or on a separate VM?

Should I acquire a license per Session Host? Or is it just a license for the entire RDS environment?

Does this version of PDF Creator for RDS support a script call to send a file?

I am just a solution provider and I charge for deploying the RDS solution, but I use PDFCreator for printing. Do I need a specific license for this or can I use the free version?

I’m creating a shared RDS solution between some clients and more in WindowsChat. Can I use PDFCreator with Terminal Server license for this purpose?

I made several inquiries, to a new destination. Thank you in advance for your help.