- Click the Gear icon in the top right corner of the page.
- Select User Options from the drop-down menu.
- Click the Preferences tab
- In the Startup section, select and change Company field.
- Select and change Country field.
- Select and change the Language field.
- Select and change the Time zone field.
- Click Save to save your changes.
AX / Dynamics 365 For Finance and Operations blog 