The site license for Vernier Video Analysis allows you to share the app with your students. Do not share the app with those outside your immediate school. See How do subscriptions work for Vernier apps? for more information on the site license.
Sharing the app with students is done by sharing a special URL created within the app. Give that URL to students by email, link on a webpage, text message, or other means.
Choose the option Distribute App from the Additional Options Menu (three dot menu) at upper right. In the resulting dialog choose Copy Link to copy the URL to the clipboard. Paste the URL as needed to share with students.
Once the app has been loaded and activated on a browser, you can return to the app with the shorter URL of videoanalysis.app
If you use a different browser, different computer, or you have cleared the browser cache, you will need to use the long URL again.