1. Shift Rotation & Single Weekly Off System
• Continuous Shift Pattern: Follows the continuous 7-day cyclical sequence `E ➔ E ➔ M ➔ M ➔ N ➔ N ➔ O` (2 Evening, 2 Morning, 2 Night, 1 Off).
• Weekly Off Synchronization: When an employee's OFF DAY (e.g. Tuesday) is set in Master Data, their 7-day shift cycle aligns directly so that they strictly receive exactly 1 Off per week.
2. Smart Role Balancing & Coverage Guarantee
Every shift requires 3 core operational roles (Role 1: BSVI SRU PIC, Role 2: OLD SRU PIC, Role 3: SIC):
- Priority 1 (SIC Allotment): Dedicated SIC staff (Role 3: `M3, E3, N3`) are assigned first.
- Priority 2 (Single-Role PIC): Dedicated single-role PICs (e.g. Role `2` only) receive their designated station.
- Priority 3 (Dual-Role Sequence): Multi-role employees follow the sequence `E1 ➔ E2 ➔ M1 ➔ M2 ➔ N1 ➔ N2` (1st day: `1`, 2nd day: `2`). If a single-role `2` is present, the dual-role employee automatically shifts to `1` to eliminate station gaps.
3. Leave Conflict Policy
• Standard Working Days: The first 3 applicants on any date remain valid. When overlapping leave applications exceed 2 consecutive days with 4 or more staff on leave simultaneously, the 4th applicant onward is flagged with: `⚠️ 4th+ Staff Overlap Caution`.
• Special Holiday Rule: If a leave period covers a scheduled Holiday / Festival, stricter staffing limits apply and conflict caution is triggered starting from the 3rd applicant onward (**`⚠️ 3rd+ Staff Holiday Overlap Caution`**).
4. Multi-Year Festival & Holiday Leave Tracking
• The system tracks festival and holiday leaves across All Recorded Years (e.g. Diwali in 2024, 2025, 2026).
• Historical records are linked to permanent Finalized Rota Snapshots.
5. Multi-User Access & PIN Security
• Admin (Default PIN: 1234): Full administrative access to edit Master Data, configure Rota rules, approve leaves, and reset staff PINs.
• Employees (Default PIN: 0000): Individual access to apply for leave, manage their own leave requests, and view rosters.