How do you implement secondary ledgers in EDMCS?

Summary:

Secondary Ledgers will pull children that are often times different from the children of the primary ledger for Cloud GL. Could you guide me on how to implement that in EDMCS?

Content (required):

Secondary ledgers that need to be updated based on primary ledger changes.

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

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