From User Preferences under Administration - Settings & Preferences chose No for "Show fields on waybills / invoices" preference.
Please note that this preference is set at user level.
If your company is doing all transportation types (Reefers, Dry Vans, Flatbeds and Containers) you may assign one user to do containers only and other users to do the rest. All they have to do is to set their preference.
Starting with version 5 released on 2016 (5.0.2016) Express Waybill have to versions: xWaybill C (intermodal version) and xWaybill TL (truckload version).