In one sentence
Define what the system will and will not do, who uses it, and how work moves through it—then convert that into permissions, screens, and acceptance criteria.
Table of contents
1) Define scope clearly
Scope is the boundary of your system. If you don’t define it, the project will expand until time and budget break.
Use a simple scope statement
Template
This system will: (list 5–10 core capabilities).
This system will NOT: (list exclusions—things people often assume).
Success looks like: (metrics: time saved, error reduction, compliance).
- User accounts & permissions
- Work request → approval → completion tracking
- Dashboards and exports
- Full accounting/ERP replacement
- Complex BI warehouse
- Custom hardware firmware work
2) Identify stakeholders & users
Stakeholders approve; users operate. If you mix them, you build the wrong UI and wrong rules.
Create 5 user personas
3) Define roles & permissions
Roles convert business policy into system rules. Start with least privilege and add access intentionally.
Permission model (simple & scalable)
| Module | Action | Roles allowed | Notes |
|---|---|---|---|
| Requests | Create / Edit | Operator | Only own requests |
| Requests | Approve / Reject | Supervisor | Within department |
| Reports | View / Export | Manager, Finance/Admin | Sensitive fields masked |
| System | Manage roles | IT/System | Audit required |
4) Map workflows (from real life)
Workflows should reflect what people actually do. Start with the “happy path”, then add exceptions.
Workflow example: Request → Approval → Execution → Close
5) Design approval gates
Approvals protect cost, quality, and compliance. Define who approves, what triggers approval, and what evidence is required.
Approval rules checklist
- Thresholds (e.g., amount, quantity, risk level)
- Approver by department/location
- Evidence required (attachments, photos, notes)
- Escalation rules (if no action after X hours)
- Audit trail (who, when, what changed)
6) Convert into data model & screens
Once scope, roles, and workflows are clear, you can design the minimum data fields and the screens that edit/view them.
Minimum screen list
- Create request form
- My tasks / queue
- Approvals inbox
- Request detail (timeline + comments)
- Roles & permissions
- Master data (locations, categories)
- Audit logs
- Reports & exports
7) Non-functional requirements (NFRs)
NFRs decide whether the system survives real operations: security, performance, availability, and auditability.
- Role-based access control
- 2FA for admins (optional)
- Audit logs on sensitive actions
- Pages load < 2 seconds for common actions
- Efficient filters and exports
- Caching for dashboards
8) Deliverables checklist
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Scope document — in-scope/out-of-scope + success metrics
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Role matrix — permissions per module/action
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Workflow diagrams — happy path + exceptions
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Approval rules — thresholds, evidence, escalation
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Screen list + wireframes — minimum screens to ship v1