Here you can see the available profiles with corresponding flow values. For intermediate current values, use the 'current trim', more information about this can be found in the 'parameters'.
In the Casambi app you can make adjustments, including the dimming speed.
Suppose you have selected a profile of 700mA and that is a bit too much, then you can set the trim to eg 90%. This means that the driver will supply 90% of 700mA or 630mA.
Below is the PDF of the supplier. PDF not displayed correctly? click here.