equity pickup configuration

Summary:

Implementing new FCC application for client - they currently manual calculate and book equity pickup. Trying to see if what they do manually in a different tool, can be automated in FCC. Hierarchy does not line up with their current calculations

Content (please ensure you mask any confidential information):

client's current equity pickup process is shown here

the hierarchy they have (and want) in FCC is this

the questions I have are can both US1001 & US1010 be holding companies as they are siblings and if so, how do I indicate that US1008 & CA2073 would need to go to US1010 and then US1010 goes to US1001?