How can I update the Subform List?

Hello Zoho Experts,

I am fairly new to Zoho. I am trying to create an app which requires Subform. Here is what I have now:

1. Picking Task a form to contain the main information of the picking task (see image below).

2. Item Pick List a form that contains items that need to be picked (see image below).

3. Item Pick List is a Subform of the Picking Task as seen on the image #1.

4. The Picking Task field on the Item Pick List is a look up of the Picking Task form.

Now, when I edit a Picking Task record on mobile app it is showing like below.

If i open the Item Pick List subform by tapping the 2 records added it will now show like the image below.

How can I edit what is showing above and only show a certain field and not all of them.

Thanks.