Unfortunately, you can't. Once you choose a team, that is your team forever.
Make sure that you think about which team you want to join before you make the decision. You might want to get with your friends and family and decide together, so that you can support the same team.
If you mean change what's in your party, under the "Your Account" tab, go to "Your Pokemon Team". You should see a link near the top that says "Change the Pokemon in your team" :)
go to Pokemon center, go down to where it says Pokemon swap and move Pokemon from your party to the PC.
it depends what team of Pokemon you have
yes
just go to pokemon box and check ur pokemon there is Move out of party Evolve Release if its in your team and if its not in yout team it says Move in party Trade Evolve Release Gift
You go and print this out then wrap it around your head. Then you will act like a chode for the rest of your life.
You have to go to the Pokemon center, then go into the computer and then go into someones PC then go on deposit Pokemon. This will let you put Pokemon from your team into the PC. Then click on withdraw this will let you take Pokemon from your PC and put them into your team.
Oh. you just press a Pokemon box and go down and press the button ' Add Pokemon to you battle team. I was a nerd on that game, all my Pokemon was level 100
you have to go to the poke-palace and beg the trainer for spare change that you will bribe mr. sanchez for.
Go to 'My Team' then scroll down. Tick the box that you want that Pokemon to be in your party. Then click 'Move to My Battle Team'.
first you go to my zone and go to the bottom and find where is says View all my Pokémon / Setup my Battle Team clickon it and if you have more than one pokemon you can remove from your team or add
go to pokecenter and find the switch box to go from PC to team