I’ve recently made some emote shortcuts for the festival dances and for the emotes which contribute towards a deed. As I have to look this up *every* single time and thought I can’t be alone…, I thought I’d share the how to and include a handy reference guide to the quickslot numbers 
To make a shortcut for an emote, type:
/shortcut XX /nameofemote
so to make a shortcut for the emote ‘cheer’ to be placed in your first quickslot, type:
/shortcut 1 /cheer
There are 6 available toolbars – named under UI as Toolbar (main bar) and Quickslots 1-5. Each slot on these toolbars has its own number used to identify it in a shortcut.
For more information about shortcuts and aliases, see this page on the lotro wiki.