I started playing the game, and right now it's only me and my partner. Do you have to do something special to add members to your team?
(EOT: Explorers or Time.)
After you go to the waterfall cave(not sure if thats the name but its the dungeon you have to jump through the waterfall to get to). When you get back to the guild chimeco will tell you about her job. After that anytime you defeat a pokemon some will ask to join your team. But dont worry even if they join your team you still get exp for defeating them.