Every link is personal and impossible to guess. Still, treat them like a key:
- A briefing link shows someone's own details, so it is meant for that person.
- Anyone holding the timetable, hand-out sheet or operations board link can open it, which is practical for your team, so share those consciously.
- Someone left? Remove them from the list and their link stops working.
- Links keep working when someone forwards them, which is exactly why the door checks the pass and not the mail.