Hello 維倫 陳,
Apologies for the delay. You can manually modify USB discriptor data at Device Configuration button available in Manual/ Additional Configuration tab of USB Wizard. Supported features in this view are detailed in section: 2.4.2 Device Mode Settings of USB Wizard Manual. It is available at Help button in USB Wizard.
In Property View tab of Device Configuration view you can add/ remove / modify direction/ number (EP1,EP2 etc. ) of end points.