Various admin users can be created and various Roles need to be assigned to these.

Step 1- In order to Restrict Role By SplitAttribute

• On Magento Admin Panel, Navigate to System > User Roles
• Choose the role, it will redirect to Role Information page.
• On this page select Role Resources , at the end page option of YES/NO of Restrict Role by SplitAttribute will be available.

Step 2

• On Magento admin panel, System > All Users
• Choose the admin user, the selected attribute will be visible in admin user as well and then selected attribute value can be assigned to the user.
• The admin user will then be able to view orders related to the assigned attribute only.

Now if Admin User A is assigned attribute of Warehouse A then he will be able to see only the orders related to Warehouse A only.