how does Ownership - Opening Balance & Current Year work in Temporary difference/Tax loss form

Summary:

I would like to understand the functionality of "Ownership - Opening Balance" & "Ownership - Current Year" for a client demonstartion.

However, from the TRCS documentation I understand "Ownership - Opening Balance" is that "the difference in the Ownership Opening Balance due to ownership change to the Parent." and

"Ownership - Current Year" is that "the difference in the Current Year due to changes in Ownership to the Parent."

But can someone help me with the steps required to get these columns such as "Ownership - Opening Balance" & "Ownership - Current Year" calculated in the TRCS tax loss/ Temporary difference form please.