At the end of the installation, Dashman offers installing the screensaver and running Dashman:

You can tick or untick those boxes, but if you want them to be unticked by default, you can pass two parameters to the installer, as this might be useful in some automatic deployments:

msiexec /i Dashman-1.0.0.msi RUN_DASHMAN_ON_EXIT="" INSTALL_SCREENSAVER_ON_EXIT=""

Present since: Dashman 1.0.0-beta.3 (not released yet)