When you do /bingo, you'll see a 5x5 square of Pokemon you need to catch. Some of these will be first evolutions, others can be second or third. You need to find these Pokemon in the wild – for example, you can't evolve a Charmander to satisfy a Charmeleon slot – and catch them. You get a 35k dollar reward for filling a line, and 150 tokens for completing the entire board. These boards reset when the server reboots. Hope this helped!