Sorry, I don’t understand your answer.
Do you know how to achieve this using GP?
Do you know some plugin let me do something similar such as Genesis theme has?
Regards
With ‘Popup Builder’ you can create a link that triggers a modal with the ‘Login With Ajax’ shortcode. You can get an acceptable design just doing changes on the set up of both plugins plus some CSS help.
I hope this approach helps you.
Best regards