How to play animation per actor using only 1 level sequence?

I wanted play the animation per switches, without the other switches also playing.

Currently I am using 1 level sequence per switch…
But, If I do have 100+ switches, that means I will have 100+ level sequences.
And if the artist want to change the animation, it means he/she will needs to modify 100+ animations.
And that is what I want to avoid.

I think your solutions might work.
However, the designer still needs to input that switch manually no?