A quick report to get your stock turns is available.
Main Menu > Cash Register > Register Reports > expand Stock > select/double click the report “Show Stock Turn by Dissection and Item
Now select the relevant options and then click the View Report button.
A very useful exercise is run it for the last 12 months and after that the 12 months before that. Then export these two years into excel using the export facility and comparing the last two years history.
In particular, what you are looking for is departments where on hand cost is going up but the turns are dropping or departments which the on hand cost is down but stock turns are going up.