Questions about grab types

[DD Tokki]

I designated an attack box for a Grab attack.

As shown in the picture, a grab attack occurs even when the character is in the air at the height of the attack box.
Can I set the attack box to be air only or ground only?

 

[Bloodbane]

Let me confirm this: you are grabbing an enemy (on the ground) then you want the grab attack to hit only ground enemies?

 

[DD Tokki]

Let me confirm this: you are grabbing an enemy (on the ground) then you want the grab attack to hit only ground enemies?

That's right. Regardless of the height of the attack box, I want to apply a grab attack when the character is on the ground.

 

[Bloodbane]

I found this question strange cause while grabbing, by default player can only attack the one he/she is grabbing and since the latter is grabbed, it's most likely be on ground.

I'm going to think outside the box here, what is actually you want or rather want to avoid here? do you have a grab attempt attack which should only hit ground enemies not air enemies?