How to quick insert full words in Studio 2014?

Hi All

I am looking for a way to set specific key combinations to quickly insert words or sentences into target. The point is I want to avoid repetitive change of languages when typing words that are in EN, since my target is Greek > different alphabet. Ideally I would like to avoid combinations like Ctrl+123 and stick to my target language, i.e. press "ΧΨΩ" and this be replaced by "USD".

In Word this would be easy through Autotex and new shortcut key, but in Trados 2014 I haven't found my way around.

Any ideas?

Many thanks in advance,

Lito