On create, the application computes the due date, creates an invoice, and lets you mark it as paid immediately.
| ID | Client | Service | Start | Due | Price | Status | Invoices | Actions |
|---|---|---|---|---|---|---|---|---|
| 4 | Μιλτιάδης Κωνσταντινίδης | Μηνιαίο Πλάνο Basic Gym | 26/08/2025 | 26/10/2025 | 60.00 € (override) | active | 2 | Edit |