For the Scan to Email/Folder option to appear on the control panel you must first configure and enable it through the EWS. After the service is enabled then it will automatically display on the control panel for you, although it may end up being towards the bottom.
To re-order your control panel items go back through the EWS. Under the General tab there should be another option for Control Panel Customization. Drag and drop the various functions available on your printer to re-order them accordingly.