  We study monotone equilibrium design by a planner who chooses an interval of
reactions that receivers take before senders and receivers move in matching
markets with signaling. Given the convex efficiency frontier over sender
surplus and receiver surplus generated by the interval delegation, the optimal
reaction interval crucially depends on the ripple effect of its lower bound and
on the trade-off between matching inefficiency and signaling cost savings in
the top pooling region generated by its upper bound. Our analysis generates
cohesive market design results that integrate the literature on minimum wage,
firm size distribution, and relative risk aversion.
