OM Extension - User override and order revision

Summary:

Need OM Extension logic for User override and order revision

Content (required):

Hello experts,

We have few OM Extensions and they work fine as-is.

One of the OM Extension is to default 'Ship Lines Together' (for ship set purpose) based on the customer preference - which is captured as DFF; since Cloud does not have the 'Order Management' fields for defaulting (unlike EBS)

So here are the conditions I am looking for:

1. Say the customer preference is Yes and hence at save/submit, the OM extension will update the 'Ship Lines Together' to Yes and that will add ship set = Default, for all lines.