Hello Jordi,
I am sorry that you are not getting a nice experience starting using our products I will try my best to guide you, you will see in the end that everything is quite straight forward.
Using a LPU-2 was a good idea to be able to use KIOSC to control it.
But as you noticed the LPU-2 doesn't allows you to have individual fixture control.
The LPU-2 use the Cuety app to create the cues and playback and then you can remotely trigger those cues and playback using the API commands.
The list of API commands is available in the Cuety manual and you can see from here that all API control are only oriented on the playbacks.
Now, if you want to be able to select each fixture individually from kiosc to control pan/tilt, intensity colors etc... you will have a look at our. CueCore3,
With the CueCore3 you will be able, from the kiosc, to select a fixture , change the parameters of the selected fixture just like you need. The down side of using a CueCore3 is that the creations of cues and playback will be different from the LPU-2/Cuety as the CueCore doesn't include a real time DMX engine, it is a DMX recorder.
That means that you will have to record the DMX content coming from a different controller ( for example your LPU-2) inside the CueCore3 memory.
The CueCore3 have some API messages, but you can also directly use the show control functions that will give you way more freedom in the way you want to control things.
To finish, about KIOSC, this is designed to be just a user interface sending a trigger when an event is done by the user. Any logic should be implemented into a 'brain" component taking care of the whole show control ( for example a CueCore3).
The Kiosc manual is the most complete manual we have listing all the capabilities of KIOSC.
If you have any specific question about it, that you cannot find the answer in the manual, it will be my pleasure to answer it.
I hope this will help you,