Ticket priority labels

What you call each of the four fixed priorities, and their colour — separate from what each one promises (see "Ticket priorities (targets and hours)"), which lives under a different Setup screen and a different permission.

When you would use this: your firm prefers different words than low/medium/high/urgent, or wants the colours to match its own conventions.

Editing one: a name and a colour, per priority. The set stays at four — every ticket keeps a clock, whatever you call the tier it runs on.

When it refuses: needs the same lookup-table permission ticket statuses and services use, not the settings-writing permission that governs the targets themselves.