How do I change the supplier I want to use?

Open the Cost page on the Job Bag, and click the Modify button. Without changing any of the specs, click Calculate, and the system will list all potential suppliers for the job. Select a supplier from the list and click Update and Close.

If the modify button is not coming up, scroll down to the bottom and ensure the Approved box is not ticked. Click Update and then you will have access to the Modify button.