If you want to disable celebrations for birthdays or work anniversaries in Matter, follow these simple steps:
Steps to disable celebrations:
Open the Matter Web App
Navigate to Settings
Navigate to Features > Celebrations
Scroll down to either birthdays or work anniversaries:
In the Celebrations settings, you will see toggles for both birthdays and work anniversaries.
To disable either one or both, simply toggle the switch off. This will stop the automatic celebration messages for the selected option(s).
Click Save to apply your changes