@ruhanga have you seen this?
This thread suggested that it’s a two-step process:
- Timezones have to be made available in the site setup (so at
/@@dateandtime-controlpanel). - Looks like users can select from the available timezones through the “portal”:
The timezone setting of the portal. Users can set their own timezone, if available timezones are defined.
Not sure what this portal is though… 