> ## Documentation Index > Fetch the complete documentation index at: https://docs.dialtu.com/llms.txt > Use this file to discover all available pages before exploring further. # Services > Duration, colour, allocation strategy, members and booking rules A **service** is what gets booked: *General consultation*, *Cardiology*. It fixes the duration and colour of its appointments, names the professionals who can take them, and decides how bookings are shared out. **Calendar → Settings → Manage Services**. Calendar Settings 'Calendar Services' page with a Create Service button and cards for Cardiology (First Available, 2 members, 45m, In-Person), Dermatology (Weighted-Round-Robin, 2 members, 30m, In-Person, Video call), Follow-up check (First Available, 4 members, 15m, Call, Video call), General consultation (Round-Robin, 3 members, 30m) and Pediatrics (Round-Robin, 1 member, 30m). ## The service form Edit Team Service 'Routing & Allocation' form for Dermatology with a Service Color palette (teal selected), Default Event Duration 30 min, Allocation Strategy Weighted-Round-Robin selected, and the Booking Rules section (2 of 5 rules active) starting with Buffer Between Events 15 min. | Field | Options | Default | What it does | | -------------------------- | --------------------------------------- | ------------ | ------------------------------------------------------------------------------------------- | | **Service Name** | text | — | Required | | **Service Color** | 10 presets or **Custom** hex | first preset | Every appointment of this service is painted with it — on the agenda and in Google Calendar | | **Default Event Duration** | **15 / 30 / 45 / 1 h / Custom** (min 5) | — | The slot length offered when booking | | **Allocation Strategy** | see below | — | How **Auto-assign** picks a professional | | **Team Members** | checkboxes | none | The professionals who can be booked for this service | | **Event Types** | **In-Person**, **Video call**, **Call** | none | Which appointment types this service offers. Optional | ### Allocation strategies | Strategy | Behaviour | | ------------------------ | ------------------------------------------------------------------------------------ | | **Round-Robin** | Fair sequential loop across members | | **Weighted-Round-Robin** | Each member gets a weight; *weights across checked members must sum to exactly 100%* | | **First Available** | The earliest open slot wins, whoever holds it | ## Booking rules Edit Team Service page on the Routing & Allocation section with the First Available strategy selected and the Booking Rules block (3 of 5 rules active) listing Buffer Between Events Off, Minimum Notice 120 min (≈ 2 h), Booking Window Off, Late Cancellation Notice 720 min (≈ 12 h) and Late Reschedule Notice 360 min (≈ 6 h), plus the note that providers can override any rule from their own profile. Five guardrails, each with an on/off switch. **All are off on a new service.** Switching one on reveals its limit. | Rule | Suggested value | What it does | | ---------------------------- | --------------- | ------------------------------------------------------------- | | **Buffer Between Events** | 15 min | Gap kept free after each appointment | | **Minimum Notice** | 60 min | How far ahead a booking must be made | | **Booking Window** | 30 days | How far into the future slots are offered | | **Late Cancellation Notice** | 720 min | Cancelling inside this window counts as a *late cancellation* | | **Late Reschedule Notice** | 360 min | Moving inside this window counts as a *late reschedule* | A professional can override any rule from their own profile — see [Professionals](/en/calendar/professionals). The service rule is the default; the profile wins. ## Deleting a service *This removes the service and its provider assignments.* A service with appointments can't be removed — cancel or wait for them first. ## What doesn't exist * **Price, description, location or category.** * **Capacity per slot** (group bookings). * **Service-level hours** — hours live on each professional's availability, per service. * **Custom event types** — the three types are fixed. ## Next step Who can be booked, and their personal rules.