Setting up external sound card

Hi,
Complete noob here. I have a U-Mix Control 2 (non-pro). I also have a tapco link.usb external sound card I borrowed off a friend. I am running a windows computer.
How do I set it up so I can cue etc with headphones and split the master.
Thanks
Complete noob here. I have a U-Mix Control 2 (non-pro). I also have a tapco link.usb external sound card I borrowed off a friend. I am running a windows computer.
How do I set it up so I can cue etc with headphones and split the master.
Thanks