PTFB Pro occasionally displays confirmation screens to help avoid accidents and to give helpful information. In most cases, these screens have a checkbox that reads "Do not show this again". If you tick this box, PTFB Pro will remember your response to the screen and won't trouble you with it again.
Occasionally, you may tick the box then later wish to have the associated confirmation screen show up again. This oddly named page lets you do just that.
Each entry in the list represents a confirmation screen that you have chosen to suppress. If you select an entry and delete it from the list, PTFB Pro will be free to show that confirmations screen (or one very similar to it) the next time it is appropriate.