(1) The reasonable fees and expenses of a single expert witness incurred in relation to a conference are to be paid as follows:
(a) if only one of the parties attends the conference--by that party; or
(b) if more than one of the parties attends the conference--by those parties jointly.
(2) If a single expert witness answers questions under rule 7.27, the expert witness's reasonable fees and expenses incurred in answering any questions are to be paid by the party asking the questions.
(3) A single expert witness is not required to undertake any work in relation to a conference, or answer any questions, until the fees and expenses for that work or those answers are paid or secured.
(4) In this rule:
"attend " includes attendance by electronic communication.