To assign a price list to a billing unit, head over to the Control Panel, under the Organisation section, click on the Manage Business & Billing Units.
The list of existing business and billing units will appear, you can search for the billing unit you want by scrolling through the list or entering the billing unit name in the following field.
Click the 'Pencil'-icon.
The following dialog will appear.
Click the Default Price List field.
Select a price list you want once it appears on the list.
Click the Update button.
Click the OK button, and you are done.
Note:
1. Ensure that you are a User with 'Administrator'-rights set up to be able to access Control Panel.