How to create installer for different setup types?

Hi,

I'm new to using Installshield and don't know how to proceed with the following setup.

According to the product type choosen the following actions need to be executed:

1) Standalone install: Files need to be copied to installdir and a x-service needs to be registered (local system account), but it needs to be disabled.
2) Server install: Files need to be copied to installdir and x-service needs to be registered (username and password asked in dialog, when left blank local account is used), now it needs to start the service automatically.
3) Client install: Files need to be copied to installdir and a x-service needs to be registered (local system account), but it needs to be disabled. Additionally a user config file needs to be copied to installdir.

I've created all required dialogs, but I don't know how to proceed with features etc. to define the required installation type.

I managed to create an installer for Standalone and Client. So when Client is installed the install level is changed to add the user config file. The service installation is the same for both, so no issues.
When I want to add the Server install, I don't know how to proceed, because of different x-service setup...

Help will be much appreciated. Many thanks in advance.