Planning Tab Reorder Threshold

SUGGESTED

Good afternoon 

I am new to Sage X3 and I am trying to understand how each filed and options work to work to my benefit my biggest problem is understanding what fields should be completed in order for my Sage Inventory Advisor to alert me of low stock.  Below is the screen in which i think feeds this information? this is found in the product site under the planning tab. Can you please advise where I complete the reorder fields to better monitor my low stock levels?