I have been using the wsjt-x program to have FT8 QSOs and it works great to simplify having QSOs. I mostly use the search & pounce method rather than calling a lot of CQs. Occasionally people contact me when I'm not calling CQ, but answering someone else's CQ. How is this possible to contact someone when they are not calling CQ and double-clicking on their callsign? For example, suppose I double-clicked on a French callsign, but an Italian calls me, as noticed by my and their callsign in red. Is there a way of calling someone using the keyboard rather than double-clicking? This hasn't happened very often but I am curious how it is possible.