Half moon set up

A particular type of seating arrangement in a meeting room where no seats have backs to the speaker. Usually used for banquet-to-meeting or meeting-to-banquet set ups.

Horseshoe setup
tables in a meeting room which have been set up in a U shape.

Head table
Table usually reserved for VIPs, speakers and other dignitaries. Often elevated or located close to the center stage.

Hiss
Unwanted random sound a speaker system makes when there is extra noise coming from the amplifier or other sound source.

HSMAI
Hospitality Sales & Marketing Association International.

HVAC
Heating, ventilation and air conditioning.

Heel and Toe
amethod of pleating used to stable folds within certain materials on a stand or exhibit.