You can add keyboards for writing or using next to a keyboard to a new place in the list, then tap Done.
If you add a keyboard for a different language, the corresponding language is automatically added to the Preferred Language Order list. You can view this list and add languages to it directly in Settings > General > Language & Region. You can also reorder the list to change how apps and websites display text.
On the onscreen keyboard: Touch and hold to switch from one keyboard to another. Continue tapping to access other enabled keyboards.
On an external keyboard: Press and hold Control, then press the Space bar to cycle between English, emoji, and Adjust the onscreen and external keyboard settings for accessibility on iPadAdd emoji, Memoji, and stickers with the iPad keyboard