Shortcode not working

Hi there,

Can someone tell how can I render the Googlepay/Apple Pay button using a shortcode so that it gets added on my custom pages? I dont want to use the Options.
And I see in Code you have added shortcode feature too.

What keyword is used to render the Gpay Button, no example is given, like
[paymentbutton=gpay] or for Apple [paymentbutton=applepay].
How do we use it in real time?

Can you share what is the proper Code format to render the button via shortcode?