Add pending worker is it possible to hide the Grade using the design studio ?

Summary

Add pending worker is it possible to hide the Grade using the design studio ?

Content

Hello, 

In Add pending worker - quick action - e Émployment details ' section- we would like to hide the 'Grade' field.
I tried to find it under the 'design studio' ,under the quick action 'Add pending worker' - Émployment details '
and couldnt find field 'grade'(only grade ladder) . Only in the page composer.

is it possible to hide the Grade in add pending worker page, using the design studio ? 

see attached file.
Thanks 
Revital