The inspector interface is provided as an easy way to define pools and prefab-specific options, and most of the time the Inspector is the best way to use PoolManager, but if you have a special use-case where maintaining the Inspector becomes tedious, or the situation is dynamic, you can do everything you can do in the Inspector through scripting. See:

• PoolManager.Pools.Create() to create a SpawnPool. This is the same as adding one through the inspector and enables you to then use Spawn() anywhere in your code.

• SpawnPool.CreatePrefabPool() to add a PrefabPool which allows you to use the per prefab options, such as preloading. You can use this instead of drag&drop in the inspector.
  

Remember when using code from PoolManager to add the namespace to the top of the script file: 'using PathologicalGames;'