iBEMI is perfectly able to control the Lightscenes (DPT_SceneControl) of your KNX installation. To create a button for controlling a Lightscene you choose button function Value Transmitter and select Data Format Lightscene. If you’d like the buttons to indicate the current active scene, check option Status indication. If you configured the Lightscene as learnable in your KNX, you can check option Memory function. In this case a store scene command is sent when you press the button longer than 2 seconds.
See all the parameters below at button function Value Transmitter.