Help the noob please

I started a tutorial and it said to make four user screens so you can see the blueprint in all four sides. How do you add screens. I tried selecting some of the ones the have you but noe of them have four screen :expressionless:

4 windows (screens are saved default window setups). Put your mouse cursor on any border and rightclick, choose Split and confirm with leftclick when you have the line where you want it.