Switch suggestion dictionary - for MAC OS japanese input

Hello everyone,

As I am studying japanese right now, I am using my mac to input a lot of text, and my input method is the following : I input my text in latin characters (romaji), as if I would be writing japanese "phonetically" with our alphabet, and the input give me the possible japanese words. Next to these japanese words, the dictionary with it's definition opens up.

Unfortunately, the dictionary it opens is a complicated one with definitions all explained in japanese, and using a japanese-english dictionary would be much more efficient for me. I have one, but I cannot find a place to replace it in the input method!

After googling a lot, I have not found a solution for this...

Does anyone know of a way to do it?

Thank you in advance