You can view all your customers under your Purchasers tab follow the steps below.
This will show customer ID, Order Invoice, Credit Invoice and Relationship.
Click on the Purchasers tab.
Click on Current Purchasers tab.
On the current tab you will see a list of customer accounts.
To access the account:
Click on the name of the customer or the Magnifying Glass.
This will open the account settings with additional tabs to view:
Details
Organizational structure
Relationship settings
Price Lists
Orders
Split Rules settings
Order Management
Communication