# See who's actually in the lobby

> Before you open the room, the host sees a live roster of every student who's loaded the waiting room. Polled every 3 seconds. Stops dispatch confusion of 'is anyone here yet?'.

Last updated 2026-05-20 · Source: https://prolaud.com/help/waiting-room-presence

## How presence is detected

When a student opens /p/<tenant>/live/<roomCode> before the host has opened the room, we register them as present in the lobby. The signal refreshes every 3 seconds — close the tab and they drop off within ~6 seconds.

## Host view

- Right rail on /dashboard/classes/<id>/host shows the lobby roster.
- Names + initials, ordered by arrival.
- A running count chip ('5 in lobby') updates live.
- When you open the room, every lobby member auto-admits — no per-student click.

## Why it matters

Hosts ship a punctuality stat to students ('Maya started 92% of past classes on time') because of this signal. The lobby roster tells you whether to wait for stragglers or kick off; the auto-admit removes the friction of admitting 30 students one-by-one.

> **Note:** Late joiners after you've opened the room skip the lobby — they auto-admit instantly and get the 'You missed: …' agenda banner so they catch up.

## Related

- [Mark agenda items done in class](https://prolaud.com/help/in-class-agenda)
- [Schedule a live class](https://prolaud.com/help/live-classes-schedule)