How do I setup my mg2922 to print from my ipad

[GrannyB]

Or, how do I add documents to canon inkjet Selphy app?

[jrhoffman75]

You can use AirPtint to print from the iPad.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0ahUKEwji0KifkY7KAhWFLSYKHfciD-kQ...

I believe the Selphy app will only print photos or items you scan using your iPhone/iPad using the app to scan.