In your event page, open the Edit drawer and scroll down to Advanced.
Check Enable guest chat. Be sure to save your settings.
Click Editor at the top to return to the main edit drawer. This time, navigate to Privacy.
Check Hide Livestream branding on embeds and save your settings.
Now select the Share icon and click Embed to get the embed code for your event.
Click More Options and make sure Enable event info and activity is turned on.
Copy and paste the iFrame code into your website's HTML editor. The embed will not include any Livestream branding or links to livestream.com.
When you go live, viewers can click the speech bubble icon in the upper right corner, enter their name into the text field, and participate in the live chat without the need for a Livestream account.