SmartClient Progressive Loading

We are using the SmartClient9.0 Power edition.

I have enabled the progressive loading for one of the queues where dataset is large. Currently 75 records get loaded initially and then on scrolling further down it would load the next 75 instructions.

I wanted to know what could be done to increase the number of records loaded from 75 to 200. We want a fairly large number of records to load and subsequent loading should in the sets of 200 records when the user scrolls down the list

Thanks,

Vivek