… as this meeting has a time and place where people will attend, any sort of form can be used by someone who is not attending.
Schedule 1, S28 says strata schemes can decide on “another way” of voting and what that other way of voting should be.
In other words, the secretary can provide a voting form that has been agreed on by the committee and that vote would be allowed (provided everyone has access to it).
But an individual can’t invent their own form. The secretary only has to ensure that anyone who is entitled to vote can do so. They don’t have to accept hand-knitted forms from all and sundry.