Fetch each user's profile page on Canvas roster, extract the "Created" date, and add a new "Joined On" column reliably.
Per
| Datum | Aantal installaties | Aantal bijwerkcontroles |
|---|---|---|
| 2025-10-22 | 0 | 0 |
| 2025-10-23 | 0 | 0 |
| 2025-10-24 | 0 | 0 |
| 2025-10-25 | 0 | 0 |
| 2025-10-26 | 0 | 0 |
| 2025-10-27 | 0 | 0 |
| 2025-10-28 | 1 | 0 |
| 2025-10-29 | 0 | 0 |
| 2025-10-30 | 0 | 0 |
| 2025-10-31 | 0 | 0 |
| 2025-11-01 | 0 | 0 |
