Hi All,
What is the point of adding companies to the top node of resource structure. I have added only one company (37) to the structure top node.

However, to the resource groups added below in the structure, I can select other companies (23) as well via connections.

Then, what is the point of defining Companies in the top node then?
Further, if we have many companies which is the best.
1. Having one structure for all companies
2. Many structures as per the company
TIA.