Warehouse Admin or Order Admin have authority to cancel the order. Follow below steps to cancel the order in WMS UI.
1. To cancel new order access New Order page, click on “Arrow Icon” for next action. Select “Cancel Order” to cancel the order. 
2. You can see the cancelled order on Cancelled page.
3. To cancel processed order access All order page and navigate to In Process tab, click on “Arrow Icon” for next action. Select “Cancel Order” to cancel the order by adding reason. 