Create a hierarchy between entities and associate child entities
It is possible to create a hierarchy between entities and associate “child” entities with a parent account. This provides a high level of customization, allowing you to either issue invoices to each entity or subsidiary separately, or aggregate the charges to the main parent account.
In the main menu bar, click Customers and select the customer account (parent) you wish to edit
Go to the Settings tab and scroll down to find the related Entities and Branches section
Click the + Add related entity and select the customer you wish to add. You can add unlimited number of entities.