i) A subpoena in terms of section 6 or 45 of the Act shall be on Form WG 28 (Annexure 2) and shall be signed by the Commissioner.
ii) A subpoena can be served on the person to whom it is addressed-
a) by delivering a copy thereof to him;
b) by leaving a copy thereof at his place of abode, business or employment with some person apparently not less than 16 years of age and apparently residing or employed there; or
c) by dispatching a copy thereof to him by registered or certified post at his place of abode, business or employment, or to his post office box number.