I have a new fresh Kubuntu installation. I have used Linux Mint and Ubuntu before, those OS have GUI settings for input method, where I can choose ibus or fcitx and type Vietnamese (my language, we use ibus-teni to type Vietnamese).
I did install ibus-teni, I can run ibus from Search tool, but couldn't type Vietnamese. So how do I setup the input method from default to ibus? Why does Kubuntu not have GUI settings for it like Ubuntu?