[ubuntu_mate] Add and Switch Language Input

Hello, I have Ubuntu Mate installed on my Raspberry Pi 3. I am loving it so far.

I seem to struggle with installing another language "Korean."

Here is what I did:

I went into Language Support and added Korean there although I can't move it to under English (US). When I try to move it to top or under English (US) it would just go back to bottom of the list again and Korean is shown grey in the list. I also tried two different input methods, "XIM" and "fcitx." I also went into Keyboard Preference and added Korean there although there are two different Korean, I am not sure which to use since both layouts still use English's layout so both do not work.

I think I am missing something. I tried to search in Google for help and I have followed some of guides but still don't work.

Please help me. D: