Yes, in this quantum scheduling system, all the potential meeting attendees would exist in superposition, simultaneously traveling to Conference Room A, Conference Room B, and the Zoom link that nobody can find. Only when someone actually arrives and observes the meeting does the wave function collapse, confirming which reality we're all stuck in.

The "ghost workers" headed to the non-realized meetings don't disappear though - in many-worlds, they just continue existing in parallel branches where they're attending completely different meetings about completely different quarterly projections. Somewhere there's a universe where your 2 PM budget review became a 2 PM birthday party because Karen from Accounting collapsed the wave function by showing up with cake instead of spreadsheets.