First, you'll need to connect a device to HereSphere, since the app will only look for scripts if a device is connected (this requirement will be removed in a future update). If using the Handy, click on the icon near the upper left corner of the seekbar that looks like a play button with radio waves, then input your Handy connection key, and enable the synchronized peripherals toggle.

Second, visit a website (like povr dot com) that uses Connect & Control. Find an interactive video. A small popup should show up in the bottom right corner that says device not connected. Click on it, then input your Handy connection key. You can now download the cmscript and it'll have the correct script reference to control your device. Place the cmscript into the same directory as the video, and rename it to match the video except for the file extension. When you play the video in HereSphere, the script should start playing after a few seconds. You might need to toggle pause and play to get it to sync well.

Please note that cmscripts don't actually have script data. It just has a reference id that allows HereSphere to communicate with Connect & Control with the playback event server. Latency might be off by a little bit, since Connect & Control is the one controlling the device.