24. Where in any proceedings in relation to any of the offences mentioned in Schedule 1 to the [1968 c. 34 (N.I.).] Children and Young Persons Act (Northern Ireland) 1968, the court is satisfied that the attendance before the court of any child in respect of whom the offence is alleged to have been committed is not essential to the just hearing of the case, the case may be proceeded with and determined in the absence of the child.