JTicketing one page checkout

Hello

Is there any documentation to modify the present checkout to a one-page checkout? I see it mention here:

https://techjoomla.com/jticketing/jticketing-version-144-is-here.html

I would also love to integrate Paypal so it is shown onsite and the attendee doesn't have to leave the site. I think I have to setup Paypal Business.

Thanks for any guidance!