As part of providing transparency, Auckland Council publishes the attendance for elected members. Here is the Howick Local Board result for April to June 2024.
Absences may be due to leave, illness, bereavement or attending other council business. I was online for one workshop as I was sick - virtual attendance is allowed under the legislation, although it's not recorded differently here.
You can see more (including previous reports, other local boards and councillors) on the Auckland Council website.
https://www.aucklandcouncil.govt.nz/about-auckland-council/performance-transparency/Pages/attendance-governing-body-meetings.aspx