Changing multiple Pokémon’s OT at once

[Otaku_user]

When I change my trainers name it doesn’t change the Pokémon’s OT that I already caught. Can someone tell me how can I change multiple Pokémon’s OT at once.

[Kaphotics]

Tools -> Batch Editor 

[Otaku_user]

8 hours ago, Kaphotics said:

Tools -> Batch Editor 

How do you use/type to use the Batch Editor. I tried but I had no idea how to use it and it says “No instructions defined for a modification set”, what do I type to change the OT name and gender?

[Kaphotics]

6 minutes ago, Otaku_user said:

How do you use/type to use the Batch Editor. I tried but I had no idea how to use it and it says “No instructions defined for a modification set”, what do I type to change the OT name and gender?

Check the tutorial. It's complicated, but straightforward.