ILLERThe top bar now shows just two things, and only for admins:
Staff logged in directly as a Cashier, Kitchen or Waiter (not an admin) don't see a top bar at all -- their view never changes, so there's nothing for it to show.
On the billing screen only, admins see a Mode drop-down above the bill list. Pick Cashier, Kitchen, Waiter, or "Kitchen wall (TV display)" to jump straight into that view without logging out or switching accounts. It only appears on the billing screen -- once you're in Admin, use the bottom navigation's Billing button to get back to it.

Every logged-in user sees a bottom navigation bar with a Profile button (your logout, notification and theme controls -- see below). Admins additionally see two more buttons:
Those two only make sense for an admin who can look at more than one view -- Cashier/Kitchen/Waiter staff logged in directly don't see them.
Tapping the Profile button opens a menu with:
If you're logged in as a Waiter or Cashier and your outlet is running low on today's free bills (10 or fewer left) with no bill credits in reserve, you'll see a warning above the bill list letting you know, so you can ask your admin to buy more credits before you run out. Kitchen staff don't see this warning -- they don't create bills.