subscription amendment how to add a new product to same subscription using new Order

Summary:

I already have a active subscription contract created from OM and it has 1 Product line with billing

The order line is closed and I want to add another product to the same subscription contract as the customer is the same

can this be done from OM if yes how

Content (please ensure you mask any confidential information):

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

23C

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