Training regulated by the Luxemburg State Parental assistance Parental assistance consists of the regular and paid care, either during the day or at night, of children from birth up to the age of 12 years: procedure for obtaining approval and training for parental assistants. Acquiring Luxembourgish nationality Obtain the 'Living Together' certificate and have your level of Luxembourgish assessed as part of the procedure for acquiring Luxembourg nationality by naturalisation or option. Functions of social and family assistance Training in social and family assistance is dispensed while the trainees are employed; it is open to adults exercising these functions in institutions and bodies offering social and family services. Crafts and trades The Master Craftsmanship ('Brevet de Maîtrise') is a professional qualification required for certain trades in order to set up in self-employment and train apprentices. Business-related professions, Property, HORECA, Transport Training courses prior to obtaining the business permit in the various business-related professions. Regulated health professions Certain professions in the health sector, referred to as regulated health professions, require practitioners to obtain an authorisation before being able to practice in the Grand Duchy.