Confirmation on Alphas in foliage

Hi Guys,

Just wanting to confirm that the Lerp Alpha Alpha Threshold slider in T3D is going to be the way to go to enable leaves to show up as shadows? I'm testing some trees I have created and they look awesome without using the alpha slider however of course it doesn't show up on the ground as shadow. So yeah just confirming this is how it's going to be..

Thanks
Shez