At the time, you can do two or three things. In the first place, take as much time as is needed. Take a full breath. Take a sip of water. Seemingly a zillion year is truly a couple of moments. Regularly crowds don't see you've gone clear - they believe you're stopping for impact or gathering your considerations. Second, irrationally, is to associate with your crowd. Maybe then turning your consideration internal and hysterically scanning your mind for what you had wanted to say, turn your consideration outward, take a gander at, and associate with the crowd.
They are simply individuals. Convey your discussion to them as you would to a companion. This moves the dynamic from an exhibition to a discussion, which brings down the pressing factor and lets's lose you to recall what you planned to say.