Create a unique order link to POS Checkout Page in Admin Panel

Is that possible to create a unique order link in admin panel to POS checkout for those who made online ordering / pre-ordering? The employee has to go to the canteen to make payment using Employee ID card, so the cashier will need to click on unique order link which direct to the checkout page in POS system. Cashier will then ask for employee to make payment when it’s on checkout page.