This should be done before the stream starts.
The first step is to visit youtube.com. Then click on the profile picture, and click “YouTube Studio”
Then, on the left, click “Videos”.
Next, you’ll see a tab that says “Live”, click it and you’ll see one video listed under “Upcoming”. If you see more than one, please contact the “Online Service IT” WhatsApp group. Then click on the pencil.
Finally, change the name of the video and hit “Save”.