In chapter 6 of Loren Abdulezer’s “Dashboard Best Practices” he has an example of a dial control that is linked to a cell that contains a formula. The dial displays the results of the formula, but can also control the value in that same cell. His downloaded example works, but if I try to recreate it myself, I can’t get the dial to control the cell value. I’ve contacted the author but have not heard back.
By the way, his examples are on an older version than the one I have.
I was able to replicate what he had in his book by using multiple dials (one on top of each other). They were made visible using dynamic visibility which was set by the radio button selector value. I aligned the radio buttons over one another so they appeared to be one.