On the group chat's "Chat Details" page, you can adjust various settings:
Group Management: View group members, modify the group chat name, set the group avatar, set your nickname in the group, view the group announcement.
Chat Settings: Set the chat background, pin the chat to the top, set message do-not-disturb, save the group to contacts.
Privacy and Security: Set scheduled group message cleanup, enable "Burn After Reading," enable "Screenshot Notification," disable private chat among group members (Admin function).
Record Management: Search chat content (searchable by group member, pictures/videos, files, links, etc.), clear chat history.
Exit/Report: Delete and exit the group chat or report the group.