We would need the ability to overbook or underbook our available resource by date:

Overbook - we need to overbook the amount of appointments, often 5-15%, to account for higher non-completion rates (technical or just customer refusals), to ensure our workforce is utilised as possible.

Underbook - we need to be able to underbook, often this is between D-56 and D-28 holding back resource capacity to allow holidays and other outages to be booked.

Pot Management - be able to control what work comes in by type by date by area (or other such entity):

Skill

Work Type