On Pokemon pearl how do you a catching show in pal park?

You can't actually have a "catching show" in Pokémon Pearl's Pal Park, as it's not a feature in the game.

Pal Park's purpose is to transfer Pokémon from your Diamond or Pearl game to your Platinum game. Here's how it works:

1. Obtain the National Dex: You need to have the National Pokédex in your Platinum game to access Pal Park.

2. Travel to Pal Park: You can find Pal Park in the southwest of the Sinnoh region in Platinum.

3. Use the Poké Balls: You can use the Poké Balls you have collected in your Diamond or Pearl game to catch Pokémon in Pal Park.

4. Transfer Pokémon: You can then transfer these caught Pokémon to your Platinum game.

It's important to note that you can't use Pal Park to catch new Pokémon. You can only transfer Pokémon you've already caught in Diamond or Pearl.

Hopefully, this clears things up!