6.—(1) Where a person–
(a)is already a user on the date of coming into force of these Regulations; or
(b)is an employee who does not habitually use display screen equipment as a significant part of his normal work but is to become a user in the undertaking in which he is already employed,
his employer shall ensure that he is provided with adequate health and safety training in the use of any workstation upon which he may be required to work.
(2) Every employer shall ensure that each user at work in his undertaking is provided with adequate health and safety training whenever the organisation of any workstation in that undertaking upon which he may be required to work is substantially modified.