[As the title suggests, I'm a new ham radio operator and have just arrived at the HamCQ community. While browsing the card exhibition, I saw a card that I wanted to exchange with, so I looked up BG5UWQ's article from March 11, 2023, but I still didn't understand why the main package only had one background option for the operating keys. As shown in the image, I would like to ask experienced members of the community how to exchange cards on HamCQ and how to send a card exchange request to others.

