Hi in Odoo 10 I installed the following module 'Account Payment Mode' from OCA.

This module requires further modules to be installed to display the Payment Method on the Sales Order and can also be combines with the module 'Sales Automatic Workflow'.

The module creates the Menu Items:

Accounting/Configuration/Management/Payment Methods
Accounting/Configuration/Management/Payment Modes

Payment Modes is clear to me. As far I understand you configure the wanted payment options which can be choosen f.e. in the Sales Order.

However configuration also requires to chose a Payment method which can be created in 'Accounting/Configuration/Management/Payment Methods' and also if the link to Bank Account is fixed or variable.What is the configuration for Payment Methods for? The preset values are manual (inbound,outbound) and electronic (inbound)

Also it has to be choosen if the "Link to Bank Account" is variable or fixed???

I would be very happy to get some further information regarding this configuration as it is unfortunately not clear to me.