How do you return your Pokemon on Heartgold version?

1. Go to the Pokémon Center.

2. Talk to the man at the counter.

3. Select the option to "Store Pokémon."

4. Select the Pokémon you want to return.

5. Confirm your selection.

The Pokémon will then be returned to your PC. You can later retrieve them by talking to the man at the counter and selecting the option to "Withdraw Pokémon."