installshield help needed on 11.5

[satyaswarup]

>From add/remove programs of system control panel, when i click on
change button of my already-setup application, it shows me three
choices(modify, repair, delete). how can i add another choice say "add
instance"?

Or

in other words my requirement is something like this:-

One of my feature in setup has 3 components in it(say comp1, comp2,
comp3). I run setup and install comp1. Now, I go to system's add/remove
programs and click on change button of my application setup, it shows
me 3 choices(modify, repair and uninstall). I click on modify. It shows
me all my components as bullets inside my feature and shows all
components except comp1 as crossed, because it is already installed.

Here my requirement is that:- If i click on comp1 again and click on
next button, I should be able to add another instance of comp1.

I just read that we can do it by installshield 11.5 version. But, I am
not able to do it. Could you pls. give me some light on this?

So, that it helps us to evaluate the product.

Satya