How is the electron arrangement of an atom indicated by electron configurations and orbitals diagrams?

Electron configurations show the energy levels, the orbitals and the number of electrons in each case. For example, the electron configuration of Na (at.no. 11) is 1s2 2s2 2p6 3s1. This shows that in energy level 1, there are 2 electrons in the s orbital. In the 2nd energy level, there are 2 electrons in the s orbital and 6 electrons in the p orbitals. etc. The orbital diagram would show essentially the same thing, but would include the spin of each electron, by showing up and down arrows. Cannot draw it here but if ^ represents up arrow and v represents down arrow, it would look something like

^v ^v ^v^v^v ^

1s 2s 2p 3s