To customize your conversation settings, select the conversation name at the top of the window or select the More button at the top right of the window and select View Profile.
There are several settings you can customize in the conversation profile:
Select the conversation title to change it.
Disable conversation notifications by unchecking Notify me when something new happens.
Make chat history available to everyone by switching the toggle On. Anyone joining the group chat will be able to see the conversation history.
By default, your conversation is open for anyone to join who has the link. You can prevent people joining your chat by switching the toggle to Off under Make a link for anyone to join. Anyone who is already in your conversation will remain in your chat.