Universal Containers has a job that requires two technicians, and both must possess the skills...

This is a classic "Double-Booking" vs. "Complex Work" scenario.

Option B is correct. To book two distinct people for the same work at the same time, you create two Service Appointments . You link them using a Complex Work dependency of type Same Start 4 . This tells the optimization engine: "Find a time where Resource A (Appointment 1) and Resource B (Appointment 2) are BOTH free, and book them simultaneously."

Option A is incorrect because a single Service Appointment can typically only have one active Assigned Resource for scheduling purposes in the standard optimization model (unless using Crew Management, but Crews are for static teams, not ad-hoc pairs).

Option D is incorrect because the requirement states they need to be assigned to "individual jobs later that day" 5 . Service Crews are designed for resources who stay together all day. Breaking a crew apart for half a day is administratively difficult.

Option C is a hack (Resource Absence) that blocks the second tech's time but doesn't link them to the actual job details properly.