Annex 87 held its second working phase meeting in a hybrid format in Lausanne, Switzerland on September 11^th and 12^th, 2023. There were 16 in-person attendees and around 28 online attendees. The annex team had very fruitful discussions on the annex in general and on subtasks. The progress in subtasks and the next steps were discussed. Most of the subtasks made substantial progress by breaking down the work into smaller parts and having started the work. So far most of the work has been focused on developing a systematic review methodology that can be used by all subtasks with slight modifications. The team discussed potential criteria for authorship rules as well. A major outcome of this meeting was the agreement of the group on a newly developed definition of Personalized Environmental Control System (PECS). A plan for each subtask until the next expert meeting in April 2024 was also developed.

In addition to the Annex meeting, a workshop was held at the Healthy Buildings Europe 2023 Conference in Aachen, Germany, in June 2023, and attended by 44 people. Furthermore, a topical session took place at the AIVC 2023 Conference in Copenhagen, Denmark in October 2023 with an attendance of roughly 20-25 people.

The next meeting of Annex 87 is scheduled to take place in Singapore on the 16^th and 17^th of April 2024.