no matter what thorn niggles your side in #Emacs, Emacs always has something to salve it.
Org Agenda would always split the window horizontally and open below, when I wanted to open it to the right. I’d always then get it to how I wanted it laid out by grumbling, resizing my window (emacs frame) and then finding some size at which it split vertically and then getting it back full screen.
Today I found transpose-frame and breathed a sigh of relief!
https://www.emacswiki.org/emacs/TransposeFrame
Original: https://toots.dgplug.org/@jason/117125754637626322