cmder is my go-to shell for Windows. Up until recently, I was unaware that it could be split into multiple panels.
There doesn’t seem to be a menu option to do it, but it’s easily done with these commands (which, yes, I need to look up every time).
Split the window horizontally (left/right split):
cmd -new_console:s cmd /k ""%ConEmuDir%\..\init.bat" "
Split the window vertically (top/bottom split):
cmd -new_console:sV cmd /k ""%ConEmuDir%\..\init.bat" "
You can also sub-split the panels into whatever format works best for you.