Click on the "Caption.Ed" icon in your browser's toolbar.
Here you can choose the subject of the session, and adjust the text size and theme of the captions.
When you're ready, click "Start".
Once you've started the session, press play on your chosen media and you will see the captions appear on your screen
Once you've finished your captioning session, select the Caption.Ed browser extension icon again and click the "Stop" button.
A full transcript of your session will now be available on your Caption.Ed library.