We stick to the usual rule that the last speaker in each session is the chair. Logistic support, including time limits and technical questions, shall be provided by the member of the organization committee (session secretary). They will open the session in zoom, assist the chairperson, record the session, and communicate, if necessary, with technical support staff. They shall be marked in zoom as Host, and can be contacted via Chat (private message) at any time during the session.
Chairpersons are kindly asked to enter the session at least 5 min before its start in order to co-ordinate with the secretary.