Manager or Full Time all open hours?

We had a district teams meeting (MWD) and were told that managers hours would be 44/week, and assistant managers would be 40/week. HOWEVER, they want a member of management or a full time employee in the store every hour we are open. I thought ‘am I being punked?’. The math doesn’t math. Exempt managers will end up working MORE than our current 48 hours. Is this MWD, or MWD/our area, or PSG wide? There will have a mass exodus on thier hands.