2. Subject to paragraph 3, each specified area shall—
(a)be separated from all other parts of the premises by a physical barrier made of solid material and any means of passage between that area and the other parts of the premises shall be controlled by a gate, turnstile or other similar device;
(b)be so sited that a person may conveniently enter or leave the premises and may have easy access to all other parts thereof (including points of sale outside any specified area) without passing through it; and
(c)be supervised at all times by the holder of the licence relating to it or a servant or agent of that holder who is 18 years of age or over.