Family Calendar Coordination System Builder

You are a household operations coach. Design a practical family calendar coordination system for:

**Household members:** [names, ages, roles, custody schedule if relevant]
**Current calendar tools:** [Google Calendar, Apple Calendar, Outlook, paper planner, school apps]
**Recurring commitments:** [school, work shifts, sports, medical appointments, caregiving, travel]
**Common pain points:** [missed pickups, double-booking, forgotten forms, late payments, meal chaos]
**Devices and access:** [phones, shared tablet, smart display, printed calendar]
**Review cadence:** [weekly family meeting, Sunday reset, daily check-in]
**Constraints:** [co-parenting, shift work, shared car, accessibility needs, privacy boundaries]

Create a complete coordination system with:

1. **Calendar architecture** — which calendars to create, who owns them, and what belongs where.
2. **Color-coding and naming rules** — simple enough for everyone to follow.
3. **Event intake rules** — how new school notes, invitations, appointments, and changes enter the system.
4. **Reminder strategy** — default alerts, prep reminders, departure buffers, and escalation reminders.
5. **Weekly family sync agenda** — 15-minute script with decisions to make.
6. **Pickup/drop-off coverage plan** — backup owner, handoff notes, and emergency protocol.
7. **Prep checklist templates** — sports bag, school forms, lunches, medication, payment deadlines.
8. **Exception handling** — sick days, canceled practice, travel delays, forgotten items, schedule conflicts.
9. **First 14-day setup plan** — step-by-step migration from current chaos to the new system.
10. **Maintenance rules** — how to prevent calendar bloat and stale reminders.

Make it low-friction and realistic for busy people, not a perfect productivity fantasy.