how to Keyframe a detail from a fractal Blueprints

hi everyone, i’m very very new at this ( a few days on U.E.)and probably many ppl can help me.
i just started using unreal engine and i’m mostly using it has a cinematic environment to make fractals with the plug ins of Machina infinitum.
I have a static scene of a fractal . where i want to animate the colors of the emissive orbit trap lights. the offset option and the period. theses are part of parameters of the blueprint. what should i do to add theses parameters in the sequencer ? do i have to edit the event graph or construction script ? i don’t understand yet any of theses 2 windows.


PS: i have a AZERTY keyboard does not make it the best for navigating the camera.
and my right mouse click brings a window of assets option