Client default settings
From Protemos Wiki
Client default settings page: http://cloud.protemos.com/client/change-default?id=ХХХХ (replace XXXX with a valid number)
On this page, you can change your client's default currency, payment conditions, and language of invoices:
Note: Payment methods can be created in Payment methods settings.
PDF locale
By default, the system uses the locale (language,date and time) of invoices specified in the "Default settings" of your account whenever client invoices are generated.
But here you may define the different one only for this particular client.
Note: The PDF locale setting defined in a client's profile overrides the default one specified in the account default settings .