Complex sentence: The script must be executed by a privileged account because of the heterogeneity of the scenarios in which a setup operation is initiated--for example, elevated privileges are necessary to serve on-demand installation requests from non-privileged users.
Split into simpler sentences: The script must be executed by a privileged account because of the heterogeneity of the scenarios in which a setup operation is initiated. For example, elevated privileges are necessary to serve on-demand installation requests from non-privileged users.