To view service orders on a Port Call, open the drawer for the given Port Call by clicking it in the list. When inside the drawer click the "Service Orders" tab, which will display registered service orders in a table.
Service Orders tab is not visible for user with Vessel permission.
By clicking a row in the service orders table, a new drawer view will open with additional service order information, like in Maintain Service Order.
Click Create Service Order in the top right corner of the table.
Fill in the required fields for your order.
Click in the Order Lines section to add an order line.
Click Create when you are done.
Also see Create Service Order.