As a chat room owner (someone who manages its settings and members), you can change the role of a room member.
To promote or demote a room member, go to chat details using the three-dot menu (figure 1).
Figure 1 Navigate to chat details
Click Members to expand the list and hover over the person you want to update. Click the three-dot menu to promote, demote, or remove the member from chat (figure 2).
Figure 2 Change the role of a chat member