Hi cascade992 ! Welcome to the forums!
At the moment we only support a late request when the page is loaded. But, we're working on the
2.1 version where we're building this feature in, so the buttons can be cached by WordPress and appear instantly. We hope it will be available within a few months as this will be a big dashboard update & feature release.
We hope it will be available in one of the first months of 2020, we'll let you know as soon we update our plugin to the 2.1 release! 🙂