I'm doing 3 nested domains. Below is an image from the best practices page and I'm doing d01, d02, d03.

The website says the parent_id in namelist.wps is 1, 1, 2.
I have other examples from uses at my school and one of them has the parent_id in namelist.wps as 0,1,2 for the same set up while the other matches the best practices page. Both examples have the parent_id in namelist.inpu as 0,1,2 however.
What is the correct parent_id in both namelist.wps and namelist.input fort d01, d02, d03 as shown in the picture on the best practices page?

The website says the parent_id in namelist.wps is 1, 1, 2.
I have other examples from uses at my school and one of them has the parent_id in namelist.wps as 0,1,2 for the same set up while the other matches the best practices page. Both examples have the parent_id in namelist.inpu as 0,1,2 however.
What is the correct parent_id in both namelist.wps and namelist.input fort d01, d02, d03 as shown in the picture on the best practices page?