Adds an 'Assign' button to the medical operations tab to assign one surgeon to all queued bills.
- Sorts surgeons by medical skill.
- Allows setting a skill range of allowed surgeons.
- Interrupts anyone not assigned if already operating.
- Interrupts operating pawn on button press to operate now (useless if patient not resting).
- Only assigned surgeon/skill level is allowed to operate on patient (set doctor work priority high).
- Performance and save friendly.
- Assigned doctors will still do recreation and sleep and meditation according to schedule.
