Open console with ~. If it doesn't work try Shift + ~.

Write helpusobi 1 to the console.
Then give weaponnum 1.

What you should add:
Lightsaber Defense - setSaberDefense 1
Lightsaber Offense - setSaberOffense 1

What you can add:
Force Grip - setForceGrip {1-3}
Force Healing - setForceHeal {1-3}
Force Jump - setForceJump {1-3}
Force Lightning - setForceLightning {1-3}
Force Pull - setForcePull {1-3}
Force Push - setForcePush {1-3}
Force Speed - setForceSpeed {1-3}
Jedi Mind Trick - setMindTrick {1-3}
Lightsaber Defense - setSaberDefense {1-3}
Lightsaber Offense - setSaberOffense {1-3}
Saber Toss - setSaberThrow {1-3}
or
setForceAll {1-3}

You can also write g_saberrealisticcombat 1. Then you can do damage to enemies with lightsaber without having to press attack button.