Invoice module problem

[enquirer66]

Working with ZC1.3.8 this module does not show up in the shopping cart for the proposed customer. None of these modules seem to work on my installation: invoice, dual pricing, group pricing.

[shooter.ca]

Working with ZC1.3.8 this module does not show up in the shopping cart for the proposed customer. None of these modules seem to work on my installation: invoice, dual pricing, group pricing.

This happened to me too. The invoice addon was working on ZC1.3.7 but on 1.3.8a it just wont show up.
Can anyone help to solve this issue?

[swguy]

For invoice to show up for a customer, the customer must be in a group whose name starts with "invoice". Have you done this?

[shooter.ca]

Right, thanks for the tips!
Now I am wondering whether there is a way which allow ppl to be in the group "invoice" once they register on the site?

Thanks.