Set Date/Currency/Numeric Format in WebIntelligence - Regional Settings

We have migrated from BOE R2 to BOE R3.1, and our users have observed that the date & numeric format is not localized to spanish (Spain).

How can Web Intelligence regional settings be configured to all the users (not editing personal configuration of every user)?

For instance the time is indicated with AM/PM instead of 24h time format and the numbers are separated by comma (,) and not by dot (.).

Example 11,816,138 instead of 11.816.138

Thank you!