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# activate()

Applies settings to the designated groups.

```
func activate()
```

## Discussion

When you call this function, the framework assigns the group preset as the engine’s [`activeGroupPreset`](/documentation/PHASE/PHASEEngine/activeGroupPreset) and deactivates the previous assignee, as needed. The settings take effect according to [`timeToTarget`](/documentation/PHASE/PHASEGroupPreset/timeToTarget).

---

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