How to "press +" in translation section?

[TomNagel]

I tried translation for the first time. I press a sentence, look at the translation, and press "looks good". A popup balloon tells me to press +. Since I use an iPad, I don't have a keyboard, a keyboard only appears when a text field is selected.
What am I missing?

[Usagiboy7]

You don´t have to use the shortcut keys. You can continue to manually click the looks good button. :) PS other than that info, I don´t know how to make the keyboard pop up. Youtube might have a demo though. If you figure it out, please let me know. :)