How to split the page adding a page from buffer (combining :sp/vs with :b)

Question

How can I open a page from buffer below or to the right of the page I'm already viewing? By the way I want to open split the whole page not only the page I'm currently in. imagine I have to rows and I want a column to the right of both rows that contains one file so I'll get from

_

to:

 |_
 |

And the new file is opened from buffer. actually I would love to know the general answer for how to kinda temporarily group some splits together and add a new split below them as a whole or to the right of them as a whole.

Answer 1

:sbuffer is a split variant of :buffer. :sb takes the same parameters :b i.e. buffer numbers or buffer names.

:sb foo

You can split this below by using :rightbelow command or 'splitbelow' option.

:rightb sb foo

As @Naumann said you can use <c-w> followed by H/J/K/L to move windows/splits however you want.

For more help see:

:h :sb
:h :rightb
:h 'splitbelow'

Answer 2

two steps:

:sp newfile

and then press

<c-w>J rsp <c-w>L