Let's create a user group for all sales representatives. In the Manage Users & Groups Interface, create a user group named Sales Reps.
See our article on Creating New User Groups.
After you define this user group, your Manage Users & Groups Groups interface should look like this:
Next, let's define the following users, with normal user permissions, and assign them to the SalesReps user group: AZrep1, CArep1, CArep2, NVrep1, ORrep1, and WArep1.
See our article on Creating New User Accounts and Adding Users to User Groups.
After you create these users, your Manage Users & Groups Users interface should look like this: