Any collaborator can change the locale settings for a spreadsheet. Doing so will change the spreadsheet's default currency and number formatting. Be advised, however, that when this change is made, it's implemented across the spreadsheet and impacts everyone working on it, regardless of geographic location.
If you're an owner or collaborator, you can change the locale and time zone by following these steps:
- Open the spreadsheet.
- Click File > Spreadsheet settings.
- In the window that appears, you can change your time zone and locale.
- Click Save settings.
The changes will now be applied across the spreadsheet.
Viewers, regardless of where they're located geographically, can't change these preferences.