Double Battle with two different Trainers

[At Night]

Hi, I was wondering how to make a double battle with two separate trainer types. I know how to do a double battle with trainers that are considered one trainer type (like with the "Twins" trainer type) but I'm not quite sure how you would do that with two different types. For example, I'd want to be able to make a double battle against a fisherman and a hiker.

 

[Poq]

Look at the stock route 3 in essentials. It has all sorts of trainer battles, including a variety of double battles.