To use Teleparty, you need to install the extension in your web browser (Chrome or Microsoft Edge), and all participants must have their own Netflix, Disney+, Hulu, or HBO Max accounts, depending on the platform you want to use. Once installed, you can create a "party" and invite others to join by sharing a link.

Remember that the name and functionality of browser extensions like Teleparty may have evolved or changed since my last knowledge update in January 2024. Please check the latest information and updates on the Telepathy website or the respective browser extension store for the most current details.