To do this, you'll want to ensure your VM is set to use a bridged adapter in VirtualBox's Network tab. You can check this with the following steps.

You can dual monitor with VirtualBox virtual machine or guest OS. To be able to use VirtualBox on Multiple Monitors with any virtual machine, you need to change the default settings.

This quick how-to article walks you through the process of connecting to a VirtualBox virtual machine, so you can work locally on a remote desktop.