Subject to regulations 6, 7 and 9 (employment of at least 40 hours per week, restriction of hours for which a person is available to 40 hours per week and no restrictions on pay after 6 months), any person may restrict his availability for employment by placing restrictions on the nature of the employment for which he is available, the terms or conditions of employment for which he is available (including the rate of remuneration) and the locality within which he is available, providing he can show that he has reasonable prospects of securing employment notwithstanding those restrictions and any restrictions on his availability in accordance with regulation 7(2), 13(2), (3), or (4) or 17(2) (additional restrictions on availability for certain groups or laid off and short-time workers).