Speed Waves help you compare speeds with friends or colleagues, or just collect results from a bunch of different users. You can create a Speed Wave by visiting the Speed Wave page linked in the upper-right corner of the site, which is also where you'll see your existing speed waves.

Once your speed wave is created, share the link with others. They'll see a Join this Speed Wave button in the upper-right of your speed wave's page, and can click on that to take a test and add their result to your speed wave

Speed waves will only collect one result per IP address, so they don't work well to gather multiple results from the same user. For that, you'll want to use your results page.