i have a way to make a custom team

Ok, it goes like this:
go to SEASON
in settings on TRADE RESTRICTIONS put NO
be any team that you want
go to trade players and trade the players on your team for an other player
once you have your team, (save the season just in case)go back to the main screen
then the roster you had will be there and just save the roster!
if you have questions just post them

When people talk about creating a custom team, they mean creating a new team in addition to the ones already in the game. This used to be a feature of NBA Live, but is now only possible through DBF editing.