How to print 6 slides per page

1
How to to change paper size using a from a Mac
Our printers only use A4 size paper but,
unfortunately, some of the software package
default to letter size
THIS MEANS THAT YOU WONT BE ABLE TO PRINT UNTIL
YOU CHANGE THE PAGE SIZE.
2
Go to File
Go down to Page Setup
3
Choose the Paper Size arrows and select A4.
4
Now, print normally that is
Go to File
Go down to Print