You can pin messages to chats or groups if you would like key information to remain easily accessible. Open your settings and toggle “message pinning” on to enable your account to pin messages. Other room participants will also need to enable pinning so they can see pinned messages.
To pin the message, click the context menu next to the selected message and clink the "Pin Message" option.
To manage your pins click the “pin” icon on the top toolbar to see the pinned messages and click the “X” icon to unpin a message once it is no longer needed.