How to add new subscription product to existing Subscription using New Quote/ Order flow

Summary:

As part of Subscription amendment scenarios, we want to add a new subscription product line to an existing subscription from CPQ OM Subscription flow. We are unable to find any reference field which can help us associate existing subscription on new CPQ Quote/ Order.

Can you please confirm if this is feasible either from CPQ or Order Management?

Content (please ensure you mask any confidential information):

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

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