how do I put a call on hold so they don't hear what I'm saying

WHen I'm talking to someone, and I want to put them on hold so that I can talk to someone in the room, (not another call, but anohter person next to me) without the person on the phone hearing what I say.

from Android Forums at AndroidCentral.com - Ask a Question http://ift.tt/2cconKB
via IFTTT