Power to extend application of scheme or licence 168.-(1) This section applies to- (a) a licensing scheme to which sections 151 to 156 apply, in so far as they provide for the grant of licences, or (b) a licence to which sections 158 to 161 apply, in so far as the scheme provides for the grant of licences, or the licence is a licence which authorises the making by or on behalf of educational estab