This paper serves as an example to show the way we pass from ordered
groupoids (ordered semigroups) to ordered hypergroupoids (ordered hypersemigroups),
from groupoids (semigroups) to hypergroupoids (hypersemigroups).
The results on semigroups (or on ordered semigroups) can
be transferred to hypersemigroups (or to ordered hypersemigroups) in the
way indicated in the present paper.
