Yes, its completely possible to livestream your Zoom meetings and Webinars via Castr to your website + multiple social media platforms.
You need to have a Zoom paid plan (Pro, Business, Education, or Enterprise account) to activate the Live Stream feature
Sign in to the Zoom web portal.
Click Account Management > Account Settings.
Under In Meeting (Advanced), click the toggle next to Allow live streaming the meetings.
Click the Custom Live Streaming Service checkbox to enable it.
5. Update the instructions so that the webinar organizer can configure the required settings when they schedule the meeting.
This article will help you to start livestream further on how to set your meetings/webinar live.
https://support.zoom.us/hc/en-us/articles/115001777826-Live-Streaming-Meetings-or-Webinars-Using-a-Custom-Service
Steps to be followed in Castr
Copy the server and key
Click More button in the Zoom host controls
4. Choose Live on Custom Live Streaming Service, the below will show:
5. Enter these details which were copied -
Stream URL - Castr Server url
Stream Key - Castr Streaming key
Live Streaming Page URL - https://castr.io/
(Please note this shareable URL will not work within Castr)
6. Click on Go Live!
7. Check your Castr Dashboard preview once connected