G-Raid - Can I add a 3rd drive to a dual dock?

Hello, I’m new here. I’m working if I can add a 3rd drive to a dual dock with a RAID 1 setup so that I have a 3rd disk that I can keep offsite but which is mirrored to the other two? Thanks,

To create a storage space in Windows, open the Start menu, type “storage spaces,” and choose the Manage Storage Spaces tool. After opening the Control Panel, PupilPath click Create a New Pool and Storage Space and Windows will present you with a list of drives attached to your computer.