Help, How can I make my component icon?

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We have made 3 components deriving from a TPanel ancestor. I was able to install the icon or the bitmap palette on a single component but when I installed the other component there was an error coz both components go the same icon I made which should be of course. My question is, how can I create an different icons for each of my components descending from common ancestor which is the TPanel?
Thanx for reading and pls help.