Examples
Examples
Try the starting example
- Shifts: role, start, end, people needed
- desk,09:00,10:00,1 floor,09:00,10:00,1
- Volunteers: name, roles joined by /, start, end, max hours
- Alex,desk/floor,09:00,12:00,2 Sam,desk,09:00,12:00,2
- Required person-shifts
- 2
- Assigned person-shifts
- 2
- Unfilled person-shifts
- 0
- Assigned volunteer-hours
- 2
- Assignment proposal
- desk 09:00-10:00: Sam; floor 09:00-10:00: Alex
Try another scenario
- Shifts: role, start, end, people needed
- desk,09:00,10:00,1 floor,09:00,10:00,1
- Volunteers: name, roles joined by /, start, end, max hours
- Alex,desk/floor,09:00,12:00,1
- Required person-shifts
- 2
- Assigned person-shifts
- 1
- Unfilled person-shifts
- 1
- Assigned volunteer-hours
- 1
- Assignment proposal
- desk 09:00-10:00: Alex; floor 09:00-10:00: Unfilled
Calculation method
Calculation method
Required person-shifts
Sum the people needed on all shifts.
Assigned person-shifts
Count feasible whole-shift volunteer assignments.
Unfilled person-shifts
Required person-shifts − assignments.
Assigned volunteer-hours
Sum durations of assigned person-shifts / 60.
Assignment proposal
Process earlier starts first, breaking ties by scarce eligible volunteers; choose the eligible volunteer with the least assigned time. Check skills, availability, maximum hours and nonoverlap.
Symbols and units
- a
- Shifts: role, start, end, people needed
- b
- Volunteers: name, roles joined by /, start, end, max hours
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- One-day whole-shift heuristic using explicitly supplied skills and availability. Maximum hours are per entered volunteer across this plan. Unfilled roles are not proof that no better assignment exists. No staffing, employment or safety standard is supplied.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.