Rules are used to define the what shift combinations are allowed to be rostered by FlexiRoster - virtually every aspect of the roster can be affected by the rostering rules - ensuring that not only are award conditions not violated, but also that known bad shift combinations are also prevented. Rules can also be defined to that all staff are given both minimum and maximum numbers of night shifts each month for example.

Rules can also be used to shape individual rosters according to staff preferences, so that staff who prefer afternoon shifts are given them in preference to those that prefer morning shifts for examples.

Each individual rule can be automatically modified depending on the Employee Type and which Employee Groups a staff member belongs to. Staff can be allowed to select a subset of which Employee Groups they wish to belong to within the online portal, thus empowering them to assert some control over how they are rostered.