Add delivery zones In the Neartail Edit page, click on the + Add field icon > enter the title "Delivery Zones”, select Dropdown or multiple choice question type > enter different options as the answer choices (see example below) and click Save. Delivery to Zone A Delivery to Zone B Delivery to Zone C Calculate delivery fee In the Neartail Edit page, click on the Add price field icon > select Delivery fee, click Next > select Custom calculation, click Next > Enter the below formula and click Create. CHARGE(Delivery Zones, 5, 15, 20) 5 is the fee for the first answer choice (Delivery to Zone A), 15 is the fee for the second answer choice (Delivery to Zone B), 20 is the fee for the third answer choice (Delivery to Zone C) CHARGE function allows you to assign fees for different answer choices for a dropdown, multiple choice or checkboxes question. You must type @ and select the delivery zone field from the list when adding the formula in the Calculate option. Calculate total amount In the Neartail Edit page, click on the Add price field button > select Net amount, click Next > select Standard calculation using NETTOTAL() formula, click Next > click Create.