Does any one know if there is docs on overriding a module in the newest scs?

SuiteCommerce does not allow for the overriding of modules, it is bad practice.

I need to add a custom payment method previously we just creating a our own module in an older version of sca to do this do you what would be a best practice to do this?

Does the creation of your new module require the overriding an existing SuiteCommerce one?

We need to change the orderwizardmodule payment method to accpet new payment methods

That is a property of the context object, so you would need to write some JavaScript that uses the

addToViewContextDefinition

method on either the checkout or layout component of the extensibility API

thank you!