To use Stream Party, you will need chrome and access to this extension https://chrome.google.com/webstore/detail/stream-party/fpckjeokpfedfjgikgnilafjcmjjdkle/related
If you need to install it, do so and restart the browser.
Once it is installed, open up chrome and look for the SP logo in the top right, it is circled below
Once it loads up, enter your name and create the party, the screen will then change to a new overlay with video and chat.
Open up the Stream party icon again up the top and you should see a new window with a URL link. Copy this link and send it to your students. They will need to install the application to view the video with this link.