Service Manager 7.11: Command Line Options
Don't ask me why I'm posting this here, Service Manager is one of the worst written things I've ever used, and I use App-V. No surprise it's written in Java. The developers need to be drawn and quartered.
-options-record <answer file>
-options <answer file>
For a silent default install just use -silent, for one that uses the answer file, just do -option AND -silent.