Glossary

Term	Meaning
Zone	Physical or logical place of duty (KS2 Playground, Dinner Hall)
Duty slot	A zone + time window + requirements on a given day revision
Assignment	A person placed on a duty slot with a role (lead / support / …)
Grade	Staff banding controlling default eligibility and last-resort priority
Duty tier	Per-person preference: preferred, acceptable, last resort, excluded
Weekly template	Recurring Mon–Fri pattern used to materialise days
Materialise	Create a day revision from the weekly template
Proposal	Unpublished day revision produced by the engine
Publish	Lock a revision as live and notify per rules
Last resort	Eligible but lowest-priority grade or person for a duty
Person	Rota subject in the staff directory
User	Login identity with a role
Commitment	Recurring teaching/cover block shown on the timetable
Hard gap	Unfilled hard requirement on a slot
SSE	Server-sent events used to refresh the Today board
Tenant	One school’s isolated portal and data
Subdomain	URL segment identifying a tenant (`/t/{subdomain}`)
Occurrence key	Stable hash identifying a duty calendar event across republishes (not assignment id)
Outlook write-back	Post-pilot push of published duties to staff Outlook via Microsoft Graph

Glossary ​