A portal tool search all problematic CMFFolder (e.g. oversized CMFFolder, CMFFolder with too many objects, CMFFolder with oversized objects)
The portlet shows the CMFFolder situation. The overflowed problems will be highlighted.
You can select the style of your site from a list of CMFFolder style.
You can change the left_slots and right_slots for each folder. Putting "empty" will stop the use of the slot, Blank input will acquire slots from the parent. You can just input the slot macros like you do in the portal properties for left_slots and right_slots