From the Home Screen hover over 'My Supply Chain' and then click on 'Manage Supply Chain' as indicated below:
Click here for Manage Supply Chain page
Select 'Tree View' from the right toolbar:
Click here for Tree View page
Once you select 'Tree View', you will get the resulting screen below:
Click on the "+" next to 'My Suppliers' to get a detailed breakdown of your organization's suppliers.
Click on the "+" next to 'My Operation's Suppliers' to view the organizations that are suppliers to your operations.