Navigate to: Stores and Reps > Stores > Manage > Offline Payment Methods

In the Offline Payment Method tab, administrators can associate unassigned Payment Methods with a store. The Payment options are created in the Payment Methods under the Dev Center. There is no requirement to create a separate payment method for the Offline payment method, the ones that are already available in Znode can be utilized. 

Also, it can be a case that the payment method associated with the Webstore Payment method can also be associated with the Offline Payment Methods.

Associating Offline Payment Methods within a Store

Navigate to: Stores and Reps > Stores > Manage > Offline Payment Methods > Associate Payment Method

Before starting these steps, the admin user will need an unassigned Payment Method

1. Use the "Associate Payment Method" button to associate an unassociated Payment Method with the store.
2. Select an unassigned Payment Method and "Save" progress. The page reloads with action confirmation.
3. The Payment Method is now associated with the store.

Note 1-

The payment methods associated with this ‘Offline Payment Methods’ Tab will be the only ones that will be available for the customers to make the Invoice payments against the order with payment type as "Invoice me" or "Purchase Order"

Note2-

COD, Invoice Me and PO cannot be set under offline payment methods