How Do I Apply The Same White Balance Setting To Other Photos As Well?

Question 1) How do I apply the same White Balance Setting to other photos imported to Lightroom Ipad?

(So can I only white balance only the shots which there is 18% Grey Card?)

I want to apply It other photos and equalize them as well.)

Question 2) Can I do batch White Balance Editing on Lightroom Ipad?

I Do White Balance Like This

Step 1) Right Panel - Color - White Balance - Custom

Step 2) Click the Drop Tool

Step 3) Choose an area on the photo

(And It changes the color of the image)

Note : I use Ipad Pro