Schedule 4 to the Principal Act is amended as follows:(a) by omitting "relevant" from paragraph (f) of the definition of party in clause 1 of Part 1 ;(b) by omitting paragraphs (d) and (e) from clause 2 of Part 2 and substituting the following paragraph:(d) the Chief Psychiatrist;(c) by omitting from clause 3 of Part 4 "a Chief" and substituting "the Chief" .