I'm meeting up with my daughter at the Eurotunnel and we have separately installed 20s headsets in our helmets but have been unable to test them (she lives 200mls away). When they're in normal 1 to 1 intercom mode, do we have to press the jog button every time we want to speak or does that only apply when you're paired to more than one 'friend' and you have to select which one to speak to?