Printing...
If you just want to print jumps...
If you just want to print your jumps, then the best bet is to create a pdf of your jump and print that.
View the tutorial on making a PDF Manual
Printing your manifest at the DZ
You have a jump. You have slotted your planes - but not your people
You let people take the slots they are comfortable with, but now you need to get the right names to manifest for each plane
Skydive designer lets you quickly allocate your people to slots, then print out a manifest sheet on a tiny cheap receipt printer
The PeriPage Printer
Unfortunately these tiny printers don't have a standard interface - so it takes hacking on a 'per printer' basis to make this work
The printer I support is the 'JEPODOR PeriPage Mini Portable Bluetooth Wireless Paper Photo Printer' (Amazon UK) (Amazon US)