I'm glad to say that there is no definite rule on the following questions,
but I'm just interested in other people's views.
When setting in the sidelines, as say second couple, do people a) shorten
their setting step so that they stay in the sidelines but do not bump into
the people on either side, b) set going in front of the people on either
side who are not setting, c) set going behind the people on either side ?
What do they do if there are 2 couples setting, and the person who is
setting with them, and on the left of the pair, takes a long setting step,
(with a stiff arm)?
I can think of an argument against all three solutions!
As an ancillary question, when the couple that is setting to each other are
in diagonal positions (1M 2L, or 1L 2M), do the dancers set in the
sidelines, or face each other and set diagonally ? - does this depend on
what comes next, e.g. turn each other with two hands?