Ensure the USB modem (with the SIM card) is connected.
Launch VZAccess Manager. From the Windows desktop, navigate: Start > All Programs (Programs) > VZAccess Manager. With Windows 10, click Start > Apps icon (located in the top-left corner) > All apps (located in the bottom-left corner) > VZAccess Manager.
If presented, enter the PIN then click OK. The default PIN is 1111.
From the top menu, click Options > Preferences. From the Minimum view, navigate: Menu > Options > Preferences.