You can do it quickly with an expression.
Select your parameter, alt-clic on the stopwatch and add this bit of code:
The value keywork will read your actuall parameter keyframes and will multiply it by 2. You can change the 2 into any number you want according to your needs.
I wondered if there might be an expression to do it.... !!
Thanks for the quick reply and help
Thanks for replying...Ill take a look at that method too......
Plenty to try here
In the case of (non-separated) position, the bounding box doesn't offer the same transform controls in the value graph as for other properties.
You do get the transform box for position keyframes. when you separate dimensions.
Note that even if you don't need to separate XYZ for position, you can do that briefly to use the transform box, and then join the dimensions back together.
I had spent a bit of time trying to get a fully adjustable transform box to appear in my graph editor until I realised I needed to separate things out.
All sorted now, so thanks for the info!