This is a very basic command so please don’t expect too much., but you can catch Mobs with Pokeballs and sometimes wild Mpbs will appear around you! Like in Pokemon GO!
To use the mod all you need to do is spawn in a Villager or you can find a Village. Then press Q on your keyboard and throw iron ingots at the villager. You will instantly receive Pokeballs! Now to catch Pokemon, walk up to any animal or mob and press Q to throw it on top of them! You will now have caught your first Pokemon and you can either keep the Egg in your inventory or you can place it down to spawn in your Wild Pokemon!
Watch out for monsters, however, as they will attack you even if you catch them so make sure you’re in Peaceful mode.