Both groups (host and watchers) need to use the same extension and have a current subscription.
After you install a Watch Party extension on your web client, set up a virtual screening.
Your friends need to roll out the same extension on their computers.

The instructions and screenshots shown here use the Teleparty extension.
grab the movie or TV show you want to watch and start playing it.
Select theTelepartyextension in the toolbar.

If you dont see thewatch partyicon in your toolbar, you may need to pin it there first.
OpenExtensionsand double-check that thePinicon next to Teleparty or Scener is highlighted in blue.
A window opens containing a URL.

Copy the link and send it to your friends so they can join the party.
Once everyone has joined, pressPlayto start watching your chosen movie or TV show together.
When you’re done, press theDisconnect.

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What Can I Watch During a Max Watch Party?
It also includes Max originals and same-day premieres.
What Do I Need to Host a Max Watch Party?
Teleparty is available for Google Chrome, Microsoft Edge and Opera browsers.
you’ve got the option to also install Teleparty on an Android gear.
Scener extension is available only for Google Chrome.
Mobile devices can view a host’s theatre but can’t be the host or co-host of a party.
What Is a Max Watch Party?
Here are the two best extensions to use (both are free to use):