Configure Global Order History Settings (Open Orders)
Navigate to System > Configuration in the main menu.
Select Commerce > Sales > Open Orders in the menu to the left.
In the Open Orders section, clear the Use Default check box and update the default option.
For Show Open Orders on a Separate Page field:
Yes — If set to Yes, Open Orders are displayed as a separate menu item in the customer user Account in the storefront.
No — If set to No, Open Orders are displayed as part of the Order History menu, on the same page with Past Orders.
Click Save Settings.