You can print out a graph.
Use the menu-option option/name to enter a user name. The name will appear on the printout. This is convenient in a situation where different people use the same printer.
The size of the graph to be printed can be adjusted by clicking and dragging.
An alternative to direct printing is to put the graph on the clipboard and paste it into a word-processing document. Copying to the clipboard can be done using the button 
Printer settings
It is very important to install the printer correctly.
The settings depend on the printer.
In Setup you can adjust the printer definition in the print menu.
Problems
Modern printers use different printer drivers and they have often a lot of options. If you have problems, the general advice is to try selecting another driver and/or changing the settings.
If problems persist, try contacting the Helpdesk of the printer firm: they will usually be able to suggest a solution.