> Short of running multiple emacs sessions, is there a way to "group" buffers
> in a frame so as to have multiple frames with different contents (and
> possibly shared buffers) ?

You can have single instance of Emacs and multiple Frames (which other
programs call windows) those windows can have Emacs windows (which other
programs call panels). Every frame will share bufferes, because it will be the
same instance of Emacs.

Just use `M-x new-frame` to open new Frame.

--
Jakub Jankiewicz, Web Developer
https://jcubic.pl/me