Behind the till. Half of Supermarket Simulator Store Manager is cashier work: you scan each item, take the payment and send the customer off happy.
Out in the aisles. The other half is running the shop itself. You manage the stock and keep the shelves organized so shoppers can find what they came for.
A store that grows. As the challenges build up, demand rises and the store expands with it. Doing both jobs at once is the real difficulty, since a long queue and a bare shelf can each leave customers unhappy. Glance at the shelves between customers so restocking never piles up.
Money of another kind. Property deals replace groceries in Monopoly Classic, another game about building up a business.