Equity Pickup from the parent's siblings

Summary:

Equity Pickup from the parent's siblings

Content (required):

Hi all,

I understand that the standard Equity pickup will be calculated at the Holding company level from its siblings (and descendants of siblings in a multi-level organization structure). However, as the picture show below, we need to pick up from the entities from the holding company's parent's siblings, and descendants of the holding company's parent's siblings. Does this have to be achieved via a custom rule?

Thanks,

Yibing

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):