How to edit an existing Laser Fixture by our own?

Hello,

I’m trying to edit a simple laser fixture (Optlaser - PR4000A-RGB) from Fixture Editor, but I can’t do anything:

I would like to fix the intensity channel which is no an intensity channel (cuelist fade and @full not working). (Fixture request update done, but it will arrive too late)

Is there any workaround to pass the General Setting blocking page? Or should I write my fixture myself completely?

I’ve reported it through request support.