As an admin, you can also manage your users' operator assignments. It's possible to either add new ones or cancel old ones.
To manage your users' assignments, do as follows:
1. Log into your account;
2. Click on "Shipper Admin" on the top menu;
3. Then, click on "User Overview" on the left side menu (initial page);
4. Click on "Details" next to user that you wish to deactivate.
Then, in the user details page:
1. Click on "Edit" right above the operator list;
2. Then, depending on what you wish to do, either click on "Add New Operator" or on the trash can icon by the operator to be removed.