Click on the Settings Button on the Main Canventory Toolbar.
If the 'Always Start Canventory using the minimum screen size' is selected, every time Canventory starts, it will open just big enough so that there will be 8 cans wide and 3 cans high.
If it is not selected, Canventory will start up in the same spot and be the same size that it was when it was closed the last time.
