"Wigglytuff's The Guild" is the first place you head to after forming an exploration team with your partner.  To become a full-fledged exploration team, you must spend your days here training and building experience.  They say it's a hard training...

Decide your team name!
When you enter The Guild, the first protégé Chatot will take you to the boss Wigglytuff.  Wigglytuff will accept you and your partner as members of the exploration team.

You can decide on your exploration team name here.

And now, life at The Guild begins!

Go to the Official Pokémon Website for more information!