@Ronna_Johnson What do you mean by “ghost”? The email address of the current logged in user will always be displayed.
You can disable those other menu items by whitelabeling your app. help.appsheet.com - White-Label Your App: Establish Your Own App Branding
You can hide the map pin under Behavior > Actions. It’s a system action (you may have click “Show system actions”). White-Label Your App: Establish Your Own App Branding help.appsheet.com