I believe you're asking about the psycast ability, 'Force Throw', which is within the Telekinesis tree under the Force Powers tab in the Pyscasts menu. Force Throw is unlocked by gaining psycast levels (through various means) and spending them to unlock that tree and ability.
Deflection, as far as I understand, is a passive inherent when you equip a lightsaber. The 'Throw lightsaber' ability also appears when you have a lightsaber equipped, and is a cast-able skill with a slight cooldown.

Hope this is helpful. And agreed - I love these Star Wars mods too!