Where to find the set-up for lookup words in Adobe Digital editions?

[LA_2018]

When you highlight a word and right-click you will get some choices e.g lookup (word). Does anybody know where I can find the set-up where I add dictionaries/lookup choices? Right now my Digital editions only show some choices I can't use depending on the word. I need an English dictionary. Hopefully, someone can help me out 🙂 

[LA_2018]

I finally find out how to do it 😉 you choose dictionary settings on your MAC and there you find the settings 😉