If you have 6 Pokemon in your party, when you catch one it gets sent to your PC.
- Go to Pokemon Center
- Walk to the PC (bluish computer)
- Log on PC
- Log on to Bebe' PC/Someone's PC
- Select the "Move Pokemon" option
- Move your Pokemon any way you like.
Remember, you can only have 6 Pokemon in your party, so you cannot take all 7. You must leave 1 in the PC.
Hope this helps.