Activate payment method for individual customers

A frequent problem in everyday shop life:

Normally, for example, the customer group "new customer" should not receive payment by invoice.
The customer group "regular customer", on the other hand, can pay by invoice, but also receives a 20% discount.

Now someone from your circle of friends, acquaintances or other environment has registered and you want to offer them an invoice, but not the discount.

With this module, the counterpart to "Prohibit payment methods for customer groups" is created,
, namely "Allow payment methods for customer".
The module overwrites the allowed payment methods for this customer, and the customer can pay on account, although he is not in the appropriate group. An exception, so to speak.