How do you move cells in LibreOffice Calc

I want to move cells in a LibreOffice calc document. For example, suppose I have:

a
b
c
d

I want to use the mouse or keyboard to select cell ‘b’ and get to:

a
c
b
d

I’ve tried various key combinations with drag & drop, and the closest I can get to leaves the original ‘b’ cell behind.

The various things on https://help.libreoffice.org/latest/si/text/scalc/guide/move_dragdrop.html either don’t work as described or aren’t useful.