Unfortunately I cannot set shortcuts. 
Hello

there is a solution for a mac user to set shortcuts, its just a bit more difficult

follow this instructions =>
1) go to "C:\Program Files\PlaneShift Crystal Blue\data\options" ((C: is my main disk on windows, it may be different on mac))
2) modify this "shortcutcommands.xml"
3) add this for example => <shortcut10 name="coal">/dig coal</shortcut10>
- it will show you "coal" as shortcut name and will do the action of /dig coal.
4) you can do this with other things as /greet, /trade, /cast, /unstick.....
i hope to had been enough clear ^^ see you.