Go to Settings -> Profile to find the Language and Region settings.
Currently folk's interface is only available in English and French. We will be slowly expanding the supported interface languages.
Selecting the region changes the date and currency formats in the workspace. For example DD/MM/YYYY can be changed to MM/DD/YYYY. Similarly, currency can be changed from 1 234,56 and 1,234.56.
Please note, changing the region doesn't change the workspace timezone which still depends on the setting in Settings -> Workspace.

