Personal settings
When logged in, click the gearbox icon in the top right to access your personal settings.

Dark mode
When dark mode is enabled, the application uses a dark background with light-colored text.
Language and time zone
Select the user interface language for ISOPlanner. This setting applies only to your account and does not affect other users in your organization. Available languages are managed in Settings / General.
The link “Change the language of your account” opens the Settings & Privacy page of your Microsoft account, where you can change your Microsoft account language.