Keep important messages from getting buried
When meeting times or group rules keep scrolling out of view in a busy group, pinning the message to the top is a far more reliable way to make sure everyone actually sees it.
Pinned messages have an expiration
Unlike a permanent announcement, a pinned message on WhatsApp automatically unpins itself after the duration you chose, so it is worth re-pinning it (or picking a longer duration) for information that needs to stay visible longer.
Frequently Asked Questions
How many messages can be pinned at once?
A group can have up to three pinned messages at a time; pinning a fourth requires unpinning one of the existing ones first.
Can anyone in the group pin a message?
By default any member can pin a message, but a group admin can restrict this in the group settings so that only admins are allowed to pin messages.