International Keyboard on Pinebook Pro

[TDC_PBP]

Does anyone know how to get the English International keyboard on the ISO Pinebook Pro running Manjaro? What I am looking for specifically is a way to change the keyboard layout so when I press the alt gr key (the right alt key) I can get accented Os and tildes over the Ns. I am taking a Spanish class and it is really aggravating not to have that option! I know that on Chromebooks all one has to do is go to the keyboard layout tab and select English International Keyboard, but when I go to do that on Manjaro I can't find a layout by that name. Any ideas? Thanks!