This will be added in the next version of Hue Essentials. That will be version 1.15.0-beta7 on Android and version 1.9.0 on iOS. The Android version should be available in a few days (in the beta). The iOS version will take some more time.
The new option will be called “Add new lights automatically” and is enabled by default, see the following for more information: How to use the Effect Creator?