useCondition

useCondition determines the accessibility requirement for selecting a solution tier during resource scheduling.

Options

Condition	Meaning
`NEVER`	The solution tier is directly inaccessible via this stop.
`NOSOLN`	Accessible only when the stop cannot be resourced through economical alternatives.
`WAITING`	Accessible if the resource is `WAITING` to sign on (typically `ST_SURGE`).
`CLOSER`	Accessible when the solution is significantly closer than alternatives (per `useCloserMargin`).
`LATE`	Accessible if the alternative solution incurs positive delay costs.
`EARLIER`	Accessible when the solution provides an earlier arrival than the alternative.
`SOLVE`	Accessible when the stop is the primary focus of the next optimisation step (not when booking new projects).
`INIT`	Accessible when booking a new project for immediate service (not for future appointments).
`APPT`	Accessible at any time.
`ALWAYS`	Synonym for `APPT`.

The options are hierarchical: each level includes all options above it. For example, selecting CLOSER also enables WAITING and NOSOLN.