This is a common dilemma, which we all face when we are building Kentico sites using the Portal Template approach.
The dilemma is how to create content management controls/web parts/panels etc..., which can be easily managed in one area and for them to be used only on specific pages?
Still not sure what I am talking about? Well an example of such a panel would be something like a promotional panel/box that appears on pages in the right hand column. It only appears on certain pages and would need to be changed now and then because of some reason or another.