Setting up a macros is like using Hot Keys. The player can set a sentence or command to any digit (0-9). To set the Macro the player must type "/ '#' " into the chat box, followed by its sentence or command.
ie. "/1 /post B> BK wings", now the global post to buy wings command is set to the number 1 macro.
To activate the Macro all the player must do is press ALT + the number the macro was set to. In the previous case ALT +1 would global post your message to buy wings.
The original guide was posted by DiamondBM in our forums. Thanks go to him.
You can check out the original here: http://forum.sunshinemu.com/f3-sunshine-mu-guides/guide-how-use-macros-4393.html