How to run flows only once and option to overrule a flow

This sounds smart. But I have no clue how to create these logics. Can I find an example. I thought I can keep it simple, but you are right, the light affects the brightness in a way. However, it did not lead to too much on an off, except of the hallway probably. But I will check the behavior later tonite. The dimmed lights are not creating real Lux, so prob. No a big influence.

Do you have an example of the two flows you use (set a Varanasi in one flow and use this in another)

Thanks for your effort and help!