Here are the steps to turn off notifications for a big WhatsApp group so it doesn't buzz constantly:
• Launch the group chat where you wish to disable alerts.
• Select "Menu" or "3 dots" to access additional choices.
• Make sure to choose "Mute notifications."
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After that, you'll be asked to select a time frame for when you don't want to receive notifications:
For the muted group to have their notifications turned back on:
• Launch the private group chat.
• Select "Menu" or "3 dots" to access additional choices.
• Find and click on "Unmute notifications."
If you mute a group on your phone, it will also be muted on WhatsApp Web and Desktop. Your computer's and phone's notification settings are separate and distinct from one another.