position child sprites to different positions per frame

I have a sprite with several child sprites - small LED indicators, denoting health, energy, etc. The parent sprite has several frames, and in the frames the places of the children should be different. This is also a problem when placing objects in the character's hand. What would be the best way to position them frames by frame?

I know of two methods: 1 - make matchin frames for the child sprites (not a too nice solution) 2 - position the LEDs from script by X and Y relative to the parent (too much work + hardcoding)

Best would be if I could add some control points in the sprite editor, and then on each frame just position the object to the corresponding control point - is there a way?