You will need to install the ibus package.
For inital configuration, you should get this message:
IBus has been started! If you cannot use IBus, please add below lines in $HOME/.bashrc, and relogin your desktop.
There are currently 2 input methods available to use with ibus: anthy ( Japanese input ) and m17n.
To use m17n you will additionally need the packages: m17n-db m17n-lib ibus-m17n.