# Instantiate via

In coherence, it is possible to specify how a Prefab is instantiated at runtime using the **Instantiate via** option on the `CoherenceSync`.

We support three default implementations, or you can create your own. The three default implementations are Default, Pooling or DestroyCoherenceSync.

### Default Instantiator

This instantiator will create a new instance of your prefab, and when the related network entity is destroyed, this prefab instance will also be destroyed.

### Pool Instantiator

This instantiator supports object pooling, instead of always creating and destroying instances, the pool instantiator will attempt to reuse existing instances. It has two options:

* *Max Size*: maximum size of the pool for this prefab, instances that exceed the limit of the pool will be destroyed when returned.
* *Initial Size*: **coherence** will create this amount of instances on app startup.

### DestroyCoherenceSync Instantiator

This instantiator will create a new instance for your prefab, but instead of completely destroying the object when the related network entity is destroyed, it will destroy or disable the CoherenceSync component instead.

## Creating your own instantiator

You can implement the *INetworkObjectInstantiator* interface to create your custom implementations that will be used by **coherence** when we need to instantiate a pefab in the scene. 

Custom implementations can be Serializable and have your own custom serialized data.

Implementations of this interface will be automatically selectable via the **Instantiate via** option in the `CoherenceSync` for the object, or on the corresponding `CoherenceSyncObject` asset.

<figure><img src="https://content.gitbook.com/content/fo6vUwbCyyb7fmwjPG0A/blobs/UCjHnIcPUjmRoQY0qBuP/AM%2005%20InstantiateVia.png" alt=""><figcaption><p>Selecting a instantiator or creating your own</p></figcaption></figure>


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