There are four kinds of rooms: virtual rooms, hybrid rooms, multi-use rooms and quiet rooms.

• The virtual rooms run exclusively on Zoom (see the virtual area). All the sessions in virtual rooms are fully online, that is, all the participants (speakers, chairs and attendees) are online.
• The hybrid rooms are associated with both a physical room and a virtual room (see hybrid sessions). In general, they accommodate hybrid sessions where some speakers are in-person and some are online. The attendees can be either in-person or online. Exceptionally, hybrid rooms can be used for fully virtual sessions. This is indicated in the programme by adding "(virtual)" after the session's title.
• The multi-use rooms are also associated with both a physical room and a virtual room and can accommodate either virtual sessions, hybrid sessions, or fully standard in-person sessions. The in-person session can be run without the need of using the associated Zoom room. However, the chairs of the in-person sessions are advised to run them as hybrid sessions, so that the virtual participants can also attend. The type of session is indicated in the programme after the title of the session.
• The quiet rooms are S0.13, S2.28, S2.29 and S2.30 (see the location below). The in-person participants can use them to participate in virtual sessions with their laptops and headphones.