Other wheel on Gio...

the left hand wheel is used (among others) as Rate wheel. you can use it to accelerate or decelerate a running cue

Thanks for the reply. When you say rate of running cue do you mean going from one cue to another’s time, or like an effect in a cue’s rate?

You're in cue 1, next is Cue 2 in 10 seconds. You press Go and realize the cue is to quick because the actors today forgot a prop. You want to show down the currently transitioning cue. Press Rate and took the wheel down. You will see in the Fader ribbon and in the playback section of the PSD that there is now a blue R followed by a number in percent. 50% means that the cue would run in 20, 200% means 5 seconds.
You can also activate rate before pressing go. If you don't switch the function off after you've used it, the percentage will stay active.