How Can I Use the Document Pro Plugin for Mobile users?

‘I purchased the Document Reader pro plugin, and in that plugin you press the F key on your keyboard to allow the 3d character to pick up a Document, from there you can scroll, zoom, turn it to the back etc. When I play my project through the Windows 64 viewer everything is fine, when I play through the Mobile view on my Android I have no key to press that’ll allow me to pick my document up. How Can I make a button on the screen mimic the f key, so that when they press the button on the screen it will allow the character to pick up the Document?’