For displaying Uninstall\Change on same button in ARP:

Follow the below steps in Wise Package Studio:

1. In 'Installation Expert', click on 'Add/Remove Programs' and select 'Do not display in Add/Remove Program list or Programs and Feature list'.
2. Add the following registry:

HKLM\Software\Microsoft\Windows\CurrentVersion\Uninstall\[ProductCode] with following Value Names

DisplayIcon, DisplayName, DisplayVersion,EstimatedSize, UninstallString, InstallLocation,VersionMajor, VersionMinor, UninstallPath etc.

Once you compile and install the package, the Uninstall/Change will display on same button in ARP panel.